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Volumn 34, Issue 2, 2015, Pages 343-360

Statistical methods for dealing with publication bias in meta-analysis

Author keywords

Funnel plots; Meta analysis; Publication bias

Indexed keywords

ACCURACY; ARCSINE BEGG TEST; ARCSINE REGRESSION METHOD; ARTICLE; ASYMMETRY OF FUNNEL PLOT; BAYES THEOREM; BEGG TEST; CHILDBIRTH; COMPUTER PROGRAM; COPAS SENSITIVITY ANALYSIS; DEAR AND BEGG SELECTION FUNCTION; DICHOTOMOUS OUTCOME; EFFECT SIZE; EGGER TEST; HARBORD TEST; HUMAN; IYENGAR AND GREENHOUSE SELECTION FUNCTION; LOGISTIC WEIGHT FUNCTION; MACASKILL TEST; MAXIMUM LIKELIHOOD METHOD; META ANALYSIS (TOPIC); OUTCOME VARIABLE; PETERS TEST; PUBLISHING; RANK CORRELATION TEST; REGRESSION ANALYSIS; ROSENTHAL FILE DRAWER METHOD; SAMPLE SIZE; SCHWARZER TEST; SELECTION MODEL; SENSITIVITY ANALYSIS; SOCIAL SUPPORT; STATISTICAL ANALYSIS; STATISTICAL CONCEPTS; STATISTICAL MODEL; STATISTICAL SIGNIFICANCE; STEP WEIGHT FUNCTION OF HEDGES; TRIM AND FILL METHOD; VAGINAL DELIVERY; DELIVERY; FEMALE; LITERATURE; PROCEDURES; STANDARDS; STATISTICAL BIAS; STATISTICS AND NUMERICAL DATA;

EID: 84916241549     PISSN: 02776715     EISSN: 10970258     Source Type: Journal    
DOI: 10.1002/sim.6342     Document Type: Article
Times cited : (170)

References (76)
  • 1
    • 33746341926 scopus 로고
    • The file drawer problem and tolerance for null results
    • Rosenthal R. The file drawer problem and tolerance for null results. Psychological Bulletin 1979; 86:638-641.
    • (1979) Psychological Bulletin , vol.86 , pp. 638-641
    • Rosenthal, R.1
  • 7
    • 39549095784 scopus 로고    scopus 로고
    • Arcsine test for publication bias in meta-analyses with binary outcomes
    • Rucker G, Schwarzer G, Carpenter J. Arcsine test for publication bias in meta-analyses with binary outcomes. Statistics in Medicine 2008; 27:746-763.
    • (2008) Statistics in Medicine , vol.27 , pp. 746-763
    • Rucker, G.1    Schwarzer, G.2    Carpenter, J.3
  • 8
    • 33748090675 scopus 로고    scopus 로고
    • A modified test for small-study effects in meta-analyses of controlled trials with binary endpoints
    • Harbord RM, Egger M, Sterne JA. A modified test for small-study effects in meta-analyses of controlled trials with binary endpoints. Statistics in Medicine 2006; 25:3443-3457.
    • (2006) Statistics in Medicine , vol.25 , pp. 3443-3457
    • Harbord, R.M.1    Egger, M.2    Sterne, J.A.3
  • 9
    • 0034823867 scopus 로고    scopus 로고
    • Funnel plots for detecting bias in meta-analysis: guidelines on choice of axis
    • Sterne JA, Egger M. Funnel plots for detecting bias in meta-analysis: guidelines on choice of axis. Journal of Clinical Epidemiology 2001; 54:1046-1055.
    • (2001) Journal of Clinical Epidemiology , vol.54 , pp. 1046-1055
    • Sterne, J.A.1    Egger, M.2
  • 10
    • 0028659004 scopus 로고
    • Operating characteristics of a rank correlation test for publication bias
    • Begg CB, Mazumdar M. Operating characteristics of a rank correlation test for publication bias. Biometrics 1994; 50:1088-1101.
    • (1994) Biometrics , vol.50 , pp. 1088-1101
    • Begg, C.B.1    Mazumdar, M.2
  • 11
    • 0035961567 scopus 로고    scopus 로고
    • A comparison of methods to detect publication bias in meta-analysis
    • Macaskill P, Walter SD, Irwig L. A comparison of methods to detect publication bias in meta-analysis. Statistics in Medicine 2001; 20:641-654.
    • (2001) Statistics in Medicine , vol.20 , pp. 641-654
    • Macaskill, P.1    Walter, S.D.2    Irwig, L.3
  • 12
    • 0033667445 scopus 로고    scopus 로고
    • Publication and related bias in meta-analysis: power of statistical tests and prevalence in the literature
    • Sterne JA, Gavaghan D, Egger M. Publication and related bias in meta-analysis: power of statistical tests and prevalence in the literature. Journal of Clinical Epidemiology 2000; 53:1119-1129.
    • (2000) Journal of Clinical Epidemiology , vol.53 , pp. 1119-1129
    • Sterne, J.A.1    Gavaghan, D.2    Egger, M.3
  • 13
    • 33846820181 scopus 로고    scopus 로고
    • A test for publication bias in meta-analysis with sparse binary data
    • Schwarzer G, Antes G, Schumacher M. A test for publication bias in meta-analysis with sparse binary data. Statistics in Medicine 2007; 26:721-733.
    • (2007) Statistics in Medicine , vol.26 , pp. 721-733
    • Schwarzer, G.1    Antes, G.2    Schumacher, M.3
  • 17
    • 84899923023 scopus 로고    scopus 로고
    • Small-study effects and heterogeneity in meta-analysis
    • PhD Thesis, University of Freiburg: City
    • Rucker G. Small-study effects and heterogeneity in meta-analysis. PhD Thesis, University of Freiburg: City, 2010.
    • (2010)
    • Rucker, G.1
  • 18
    • 0000976601 scopus 로고    scopus 로고
    • Meta-analysis, funnel plots and sensitivity analysis
    • Copas J, Shi JQ. Meta-analysis, funnel plots and sensitivity analysis. Biostatistics 2000; 1:247-262.
    • (2000) Biostatistics , vol.1 , pp. 247-262
    • Copas, J.1    Shi, J.Q.2
  • 19
    • 0030923529 scopus 로고    scopus 로고
    • Publication bias: evidence of delayed publication in a cohort study of clinical research projects
    • Stern JM, Simes RJ. Publication bias: evidence of delayed publication in a cohort study of clinical research projects. British Medical Journal 1997; 315:640-645.
    • (1997) British Medical Journal , vol.315 , pp. 640-645
    • Stern, J.M.1    Simes, R.J.2
  • 20
    • 0024062359 scopus 로고
    • Graphical display of estimates having differing standard errors
    • Galbraith RF. Graphical display of estimates having differing standard errors. Technometrics 1988; 30:271-281.
    • (1988) Technometrics , vol.30 , pp. 271-281
    • Galbraith, R.F.1
  • 21
    • 0023790239 scopus 로고
    • A note on graphical presentation of estimated odds ratios from several clinical trials
    • Galbraith RF. A note on graphical presentation of estimated odds ratios from several clinical trials. Statistics in Medicine 1988; 7:889-894.
    • (1988) Statistics in Medicine , vol.7 , pp. 889-894
    • Galbraith, R.F.1
  • 23
    • 84863414972 scopus 로고    scopus 로고
    • A generalized weighting regression-derived meta-analysis estimator robust to small-study effects and heterogeneity
    • Moreno SG, Sutton AJ, Thompson JR, Ades AE, Abrams KR, Cooper NJ. A generalized weighting regression-derived meta-analysis estimator robust to small-study effects and heterogeneity. Statistics in Medicine 2012; 31:1407-1417.
    • (2012) Statistics in Medicine , vol.31 , pp. 1407-1417
    • Moreno, S.G.1    Sutton, A.J.2    Thompson, J.R.3    Ades, A.E.4    Abrams, K.R.5    Cooper, N.J.6
  • 25
    • 0037106045 scopus 로고    scopus 로고
    • Inflation of type I error rate in two statistical tests for the detection of publication bias in meta-analyses with binary outcomes
    • Schwarzer G, Antes G, Schumacher M. Inflation of type I error rate in two statistical tests for the detection of publication bias in meta-analyses with binary outcomes. Statistics in Medicine 2002; 21:2465-2477.
    • (2002) Statistics in Medicine , vol.21 , pp. 2465-2477
    • Schwarzer, G.1    Antes, G.2    Schumacher, M.3
  • 27
    • 84916221390 scopus 로고    scopus 로고
    • Performance of tests and adjustments for publication bias in the presence of heterogeneity, Technical Report 05-01 Department of Health Sciences, University of Leicester: City
    • Peters JL, Sutton AJ, Jones DR, Abrams KR, Rushton L. Performance of tests and adjustments for publication bias in the presence of heterogeneity, Technical Report 05-01 Department of Health Sciences, University of Leicester: City, 2005.
    • (2005)
    • Peters, J.L.1    Sutton, A.J.2    Jones, D.R.3    Abrams, K.R.4    Rushton, L.5
  • 29
    • 0033619529 scopus 로고    scopus 로고
    • Explaining heterogeneity in meta-analysis: a comparison of methods
    • Thompson SG, Sharp SJ. Explaining heterogeneity in meta-analysis: a comparison of methods. Statistics in Medicine 1999; 18:2693-2708.
    • (1999) Statistics in Medicine , vol.18 , pp. 2693-2708
    • Thompson, S.G.1    Sharp, S.J.2
  • 30
    • 0033934949 scopus 로고    scopus 로고
    • Trim and fill: a simple funnel-plot-based method of testing and adjusting for publication bias in meta-analysis
    • Duval S, Tweedie R. Trim and fill: a simple funnel-plot-based method of testing and adjusting for publication bias in meta-analysis. Biometrics 2000; 56:455-463.
    • (2000) Biometrics , vol.56 , pp. 455-463
    • Duval, S.1    Tweedie, R.2
  • 31
    • 0442309557 scopus 로고    scopus 로고
    • A nonparametric "trim and fill" method of accounting for publication bias in meta-analysis
    • Duval S, Tweedie R. A nonparametric "trim and fill" method of accounting for publication bias in meta-analysis. Journal of the American Statistical Association 2000; 95:89-98.
    • (2000) Journal of the American Statistical Association , vol.95 , pp. 89-98
    • Duval, S.1    Tweedie, R.2
  • 32
    • 35648956134 scopus 로고    scopus 로고
    • Performance of the trim and fill method in the presence of publication bias and between-study heterogeneity
    • Peters JL, Sutton AJ, Jones DR, Abrams KR, Rushton L. Performance of the trim and fill method in the presence of publication bias and between-study heterogeneity. Statistics in Medicine 2007; 26:4544-4562.
    • (2007) Statistics in Medicine , vol.26 , pp. 4544-4562
    • Peters, J.L.1    Sutton, A.J.2    Jones, D.R.3    Abrams, K.R.4    Rushton, L.5
  • 33
    • 0038726233 scopus 로고    scopus 로고
    • Adjusting for publication bias in the presence of heterogeneity
    • Terrin N, Schmid CH, Lau J, Olkin I. Adjusting for publication bias in the presence of heterogeneity. Statistics in Medicine 2003; 22:2113-2126.
    • (2003) Statistics in Medicine , vol.22 , pp. 2113-2126
    • Terrin, N.1    Schmid, C.H.2    Lau, J.3    Olkin, I.4
  • 34
    • 84871714346 scopus 로고    scopus 로고
    • Correcting for Publication Bias in the Presence of Covariates
    • Minnesota Evidence-based Practice Center: City, September.
    • Duva S, Weinhandl E. Correcting for Publication Bias in the Presence of Covariates. Minnesota Evidence-based Practice Center: City, September 2011.
    • (2011)
    • Duva, S.1    Weinhandl, E.2
  • 36
    • 84972490741 scopus 로고
    • Selection models and the file drawer problem
    • Iyengar S, Greenhouse J. Selection models and the file drawer problem. Statistical Science 1988; 3:109-117.
    • (1988) Statistical Science , vol.3 , pp. 109-117
    • Iyengar, S.1    Greenhouse, J.2
  • 37
    • 84972490746 scopus 로고
    • Selection models and the file drawer problem: comment
    • Hedges LV. Selection models and the file drawer problem: comment. Statistical Science 1988; 3:118-120.
    • (1988) Statistical Science , vol.3 , pp. 118-120
    • Hedges, L.V.1
  • 39
    • 84972494529 scopus 로고
    • An approach for assessing publication bias prior to performing a meta-analysis
    • 2378-2245
    • Dear KBG, Begg CB. An approach for assessing publication bias prior to performing a meta-analysis. Statistical Science 1992; 7:2378-2245.
    • (1992) Statistical Science , vol.7
    • Dear, K.B.G.1    Begg, C.B.2
  • 40
    • 79959797354 scopus 로고    scopus 로고
    • Selection models with monotone weight functions in meta analysis
    • Rufibach K. Selection models with monotone weight functions in meta analysis. Biometrical Journal 2011; 53:689-704.
    • (2011) Biometrical Journal , vol.53 , pp. 689-704
    • Rufibach, K.1
  • 41
    • 84972487962 scopus 로고
    • Modeling publication selection effects in meta-analysis
    • Hedges LV. Modeling publication selection effects in meta-analysis. Statistical Science 1992; 7:246-255.
    • (1992) Statistical Science , vol.7 , pp. 246-255
    • Hedges, L.V.1
  • 42
    • 21844487157 scopus 로고
    • A general linear model for estimating effect size in the presence of publication bias
    • Vevea J, Hedges L. A general linear model for estimating effect size in the presence of publication bias. Psychometrika 1995; 60:419-435.
    • (1995) Psychometrika , vol.60 , pp. 419-435
    • Vevea, J.1    Hedges, L.2
  • 43
    • 30544451496 scopus 로고    scopus 로고
    • Publication bias in research synthesis: sensitivity analysis using a priori weight functions
    • Vevea JL, Woods CM. Publication bias in research synthesis: sensitivity analysis using a priori weight functions. Psychological Methods 2005; 10:428-443.
    • (2005) Psychological Methods , vol.10 , pp. 428-443
    • Vevea, J.L.1    Woods, C.M.2
  • 44
    • 0000125534 scopus 로고
    • Sample selection bias as a specification error
    • Heckman J. Sample selection bias as a specification error. Journal of the econometric society 1979; 47:153-161.
    • (1979) Journal of the econometric society , vol.47 , pp. 153-161
    • Heckman, J.1
  • 47
    • 0034916079 scopus 로고    scopus 로고
    • A sensitivity analysis for publication bias in systematic reviews
    • Copas JB, Shi JQ. A sensitivity analysis for publication bias in systematic reviews. Statistical Methods in Medical Research 2001; 10:251-265.
    • (2001) Statistical Methods in Medical Research , vol.10 , pp. 251-265
    • Copas, J.B.1    Shi, J.Q.2
  • 48
    • 65349121882 scopus 로고    scopus 로고
    • Empirical evaluation showed that the Copas selection model provided a useful summary in 80% of meta-analyses
    • Carpenter JR, Schwarzer G, Rucker G, Kunstler R. Empirical evaluation showed that the Copas selection model provided a useful summary in 80% of meta-analyses. Journal of Clinical Epidemiology 2009; 62:624-631 e624.
    • (2009) Journal of Clinical Epidemiology , vol.62 , pp. 624-631 e624
    • Carpenter, J.R.1    Schwarzer, G.2    Rucker, G.3    Kunstler, R.4
  • 49
    • 75749111599 scopus 로고    scopus 로고
    • Empirical evaluation suggests Copas selection model preferable to trim-and-fill method for selection bias in meta-analysis
    • Schwarzer G, Carpenter J, Rucker G. Empirical evaluation suggests Copas selection model preferable to trim-and-fill method for selection bias in meta-analysis. Journal of Clinical Epidemiology 2010; 63:282-288.
    • (2010) Journal of Clinical Epidemiology , vol.63 , pp. 282-288
    • Schwarzer, G.1    Carpenter, J.2    Rucker, G.3
  • 50
    • 1642293155 scopus 로고    scopus 로고
    • A bound for publication bias based on the fraction of unpublished studies
    • Copas J, Jackson D. A bound for publication bias based on the fraction of unpublished studies. Biometrics 2004; 60:146-153.
    • (2004) Biometrics , vol.60 , pp. 146-153
    • Copas, J.1    Jackson, D.2
  • 52
    • 50849135481 scopus 로고    scopus 로고
    • A robust P-value for treatment effect in meta-analysis with publication bias
    • Copas JB, Malley PF. A robust P-value for treatment effect in meta-analysis with publication bias. Statistics in Medicine 2008; 27:4267-4278.
    • (2008) Statistics in Medicine , vol.27 , pp. 4267-4278
    • Copas, J.B.1    Malley, P.F.2
  • 53
    • 34547659859 scopus 로고    scopus 로고
    • Confidence intervals and P-values for meta-analysis with publication bias
    • Henmi M, Copas JB, Eguchi S. Confidence intervals and P-values for meta-analysis with publication bias. Biometrics 2007; 63:475-482.
    • (2007) Biometrics , vol.63 , pp. 475-482
    • Henmi, M.1    Copas, J.B.2    Eguchi, S.3
  • 54
    • 0031517319 scopus 로고    scopus 로고
    • An application of Gibbs sampling to estimation in meta-analysis: accounting for publication bias
    • Cleary RJ, Casella G. An application of Gibbs sampling to estimation in meta-analysis: accounting for publication bias. Journal of Educational and Behavioral Statistics 1997; 22:141-154.
    • (1997) Journal of Educational and Behavioral Statistics , vol.22 , pp. 141-154
    • Cleary, R.J.1    Casella, G.2
  • 55
    • 0032472283 scopus 로고    scopus 로고
    • Modeling publication bias using weighted distributions in a Bayesian framework
    • Larose DT, Dey DK. Modeling publication bias using weighted distributions in a Bayesian framework. Computational Statistics & Data Analysis 1998; 26:279-302.
    • (1998) Computational Statistics & Data Analysis , vol.26 , pp. 279-302
    • Larose, D.T.1    Dey, D.K.2
  • 56
    • 21744433268 scopus 로고    scopus 로고
    • Hierarchical selection models with applications in meta-analysis
    • Silliman NP. Hierarchical selection models with applications in meta-analysis. Journal of the American Statistical Association 1997; 92:926-936.
    • (1997) Journal of the American Statistical Association , vol.92 , pp. 926-936
    • Silliman, N.P.1
  • 57
    • 23244434820 scopus 로고    scopus 로고
    • How vague is vague? A simulation study of the impact of the use of vague prior distributions in MCMC using WinBUGS
    • Lambert PC, Sutton AJ, Burton PR, Abrams KR, Jones DR. How vague is vague? A simulation study of the impact of the use of vague prior distributions in MCMC using WinBUGS. Statistics in Medicine 2005; 24:2401-2428.
    • (2005) Statistics in Medicine , vol.24 , pp. 2401-2428
    • Lambert, P.C.1    Sutton, A.J.2    Burton, P.R.3    Abrams, K.R.4    Jones, D.R.5
  • 58
    • 0347107686 scopus 로고    scopus 로고
    • Publication bias in meta-analysis: a Bayesian data-augmentation approach to account for issues exemplified in the passive smoking debate
    • Givens GH, Smith DD, Tweedie RL. Publication bias in meta-analysis: a Bayesian data-augmentation approach to account for issues exemplified in the passive smoking debate. Statistical Science 1997; 12:221-240.
    • (1997) Statistical Science , vol.12 , pp. 221-240
    • Givens, G.H.1    Smith, D.D.2    Tweedie, R.L.3
  • 61
    • 80052819432 scopus 로고    scopus 로고
    • Assessing the sensitivity of meta-analysis to selection bias: a multiple imputation approach
    • Carpenter J, Rucker G, Schwarzer G. Assessing the sensitivity of meta-analysis to selection bias: a multiple imputation approach. Biometrics 2011; 67:1066-1072.
    • (2011) Biometrics , vol.67 , pp. 1066-1072
    • Carpenter, J.1    Rucker, G.2    Schwarzer, G.3
  • 62
    • 33748791182 scopus 로고    scopus 로고
    • Using journal impact factors to correct for the publication bias of medical studies
    • Baker R, Jackson D. Using journal impact factors to correct for the publication bias of medical studies. Biometrics 2006; 62:785-792.
    • (2006) Biometrics , vol.62 , pp. 785-792
    • Baker, R.1    Jackson, D.2
  • 63
    • 78649676690 scopus 로고    scopus 로고
    • Confidence intervals for random effects meta-analysis and robustness to publication bias
    • Henmi M, Copas JB. Confidence intervals for random effects meta-analysis and robustness to publication bias. Statistics in Medicine 2010; 29:2969-2983.
    • (2010) Statistics in Medicine , vol.29 , pp. 2969-2983
    • Henmi, M.1    Copas, J.B.2
  • 64
    • 0036012997 scopus 로고    scopus 로고
    • Publication bias and meta-analysis for 2x2 tables: an average Markov chain Monte Carlo EM algorithm
    • Shi JQ, Copas J. Publication bias and meta-analysis for 2x2 tables: an average Markov chain Monte Carlo EM algorithm. Journal of the Royal Statistical Society: Series B 2002; 64:221-236.
    • (2002) Journal of the Royal Statistical Society: Series B , vol.64 , pp. 221-236
    • Shi, J.Q.1    Copas, J.2
  • 65
    • 84916231125 scopus 로고    scopus 로고
    • Review Manager (RevMan) [Computer program]. Version 5. 1. Copenhagen: The Nordic Cochrane Centre, The Cochrane Collaboration
    • Review Manager (RevMan) [Computer program]. Version 5. 1. Copenhagen: The Nordic Cochrane Centre, The Cochrane Collaboration, 2011.
    • (2011)
  • 66
    • 84916220267 scopus 로고    scopus 로고
    • R Foundation for Statistical Computing, Vienna, Austria. (Available from: ) [Accessed on 1 April 2014].
    • Development Core Team R. R: A Language and Environment for Statistical Computing. R Foundation for Statistical Computing, Vienna, Austria. ISBN 3-900051-07-0. 2011. (Available from: http://www.R-project.org/) [Accessed on 1 April 2014].
    • (2011)
  • 67
    • 77958110812 scopus 로고    scopus 로고
    • Conducting meta-analyses in R with the metafor package
    • Viechtbauer W. Conducting meta-analyses in R with the metafor package. Journal of Statistical Software 2010; 36:1-48.
    • (2010) Journal of Statistical Software , vol.36 , pp. 1-48
    • Viechtbauer, W.1
  • 68
    • 65349169770 scopus 로고    scopus 로고
    • meta: an R package for meta-analysis
    • Schwarzer G. meta: an R package for meta-analysis. R News 2007; 7:40-45.
    • (2007) R News , vol.7 , pp. 40-45
    • Schwarzer, G.1
  • 69
    • 84916228914 scopus 로고    scopus 로고
    • PUB_BIAS: a SAS macro for detecting publication bias in meta-analysis, Available from: ) [Accessed on 10 May 2011].
    • Rendina-Gobioff G, Kromre JD. PUB_BIAS: a SAS macro for detecting publication bias in meta-analysis, 2006. (Available from: http://analytics.ncsu.edu/sesug/2006/PO04_06.PDF) [Accessed on 10 May 2011].
    • (2006)
    • Rendina-Gobioff, G.1    Kromre, J.D.2
  • 70
    • 31644450063 scopus 로고    scopus 로고
    • Stata Statistical Software: Release 10
    • College Station. TX: StataCorp LP
    • StataCorp. Stata Statistical Software: Release 10. College Station. TX: StataCorp LP, 2007.
    • (2007)
  • 71
    • 77953950015 scopus 로고    scopus 로고
    • Stata module to test for small-study effects in meta-analysis
    • Boston College Department of Economics
    • METABIAS. Stata module to test for small-study effects in meta-analysis. Boston College Department of Economics, 2000.
    • (2000)
  • 72
    • 78650957515 scopus 로고    scopus 로고
    • Stata module to perform nonparametric analysis of publication bias
    • Boston College Department of Economics
    • METATRIM. Stata module to perform nonparametric analysis of publication bias. Boston College Department of Economics, 2000.
    • (2000)
  • 73
    • 0037742865 scopus 로고    scopus 로고
    • Statistical models of publication basis in meta-analysis
    • PhD Thesis, University of London: City
    • Preston C. Statistical models of publication basis in meta-analysis. PhD Thesis, University of London: City, 2000.
    • (2000)
    • Preston, C.1
  • 74
    • 77956886234 scopus 로고    scopus 로고
    • copas: an R package for fitting the Copas selection model
    • Carpenter J, Rücker G, Schwarzer G. copas: an R package for fitting the Copas selection model. The R Journal 2009; 1:31-36.
    • (2009) The R Journal , vol.1 , pp. 31-36
    • Carpenter, J.1    Rücker, G.2    Schwarzer, G.3


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