Nutritional assessment of the neonate

Neonatal Nutrition and Metabolism, Second Edition

Volumn 9780521824552, Issue , 2006, Pages 586-601

  Ridout, Robert Erick ^a   Georgieff, Michael K ^b  

^a UNIVERSITY OF COLORADO   (United States)

^b UNIVERSITY OF MINNESOTA MEDICAL SCHOOL   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 53849103591     PISSN: None     EISSN: None     Source Type: Book    
DOI: 10.1017/CBO9780511544712.041     Document Type: Chapter

References (118)

1. Kashyap, S., Heird, W. Protein requirements of low birthweight, very low birthweight, and small for gestational age infants. In Raiha, N. ed. Protein Metabolism during Infancy. NewYork: Raven Press; 1993:133-51.
2. Rubecz, I., Mestyan, J., Varga, P., Klujber, L. Energy metabolism, substrate utilization, and nitrogen balance in parenterally fed postoperative neonates and infants. The effect of glucose, glucose + amino acids, lipid + amino acids infused in isocaloric amounts. J. Pediatr. 1981;98:42-6.
3. Zlotkin, S. H., Bryan, M.H., Anderson, G. H. Intravenous nitrogen and energy intakes required to duplicate in utero nitrogen accretion in prematurely born human infants. J. Pediatr. 1981;99:115-20.
4. Duffy, B., Gunn, T., Collinge, J., Pencharz, P. The effect of varying protein quality and energy intake on the nitrogen metabolism of parenterally fed very lowbirthweight (less than 1600 g) infants. Pediatr. Res. 1981;15:1040-4.
5. van Toledo-Eppinga, L., Kalhan, S. C., Kulik, W., Jakobs, C., Lafeber, H. N. Relative kinetics of phenylalanine and leucine in low birth weight infants during nutrient administration. Pediatr. Res. 1996;40:41-6.
6. Anderson, T. L., Muttart, C. R., Bieber, M. A., Nicholson, J. F., Heird, W. C. A controlled trial of glucose versus glucose and amino acids in premature infants. J. Pediatr. 1979;94: 947-51.
7. Yu, V.Y., James, B., Hendry, P., MacMahon, R. A.Totalparenteral nutrition in very low birthweight infants: a controlled trial. Arch. Dis. Child. 1979;54:653-61.
8. Saini, J., MacMahon, P., Morgan, J. B., Kovar, I. Z. Early parenteral feeding of amino acids. Arch. Dis. Child. 1989;64: 1362-6.
9. van Lingen, R. A., van Goudoever, J. B., Luijendijk, I. H., Wattimena, J. L., Sauer, P. J. Effects of early amino acid administration during total parenteral nutrition on protein metabolism in pre-terminfants. Clin. Sci. (Lond). 1992;82:199-203.
10. Rivera, A. Jr, Bell, E. F., Stegink, L. D., Ziegler, E. E. Plasma amino acid profiles during the first three days of life in infants with respiratory distress syndrome: effect of parenteral amino acid supplementation. J. Pediatr. 1989;115:465-8.
11. Van Goudoever, J. B., Colen, T., Wattimena, J. L. et al.Immediate commencement of amino acid supplementation in preterm infants: effect on serum amino acid concentrations and protein kinetics on the first day of life. J.Pediatr. 1995;127: 458-65.
12. Thureen, P. J., Anderson, A. H., Baron, K. A. et al.Protein balance in the first week of life in ventilated neonates receiving parenteral nutrition. Am. J. Clin. Nutr. 1998;68:1128-35.
13. Rivera, A. Jr, Bell, E. F., Bier, D. M. Effect of intravenous amino acids on protein metabolism of preterm infants during the first three days of life. Pediatr. Res. 1993;33:106-11.
14. Denne, S. C., Karn, C. A., Ahlrichs, J. A. et al.Proteolysis and phenylalanine hydroxylation in response to parenteral nutrition in extremely premature and normal newborns. J. Clin. Invest. 1996;97:746-54.
15. Ziegler, E. E. Protein requirements of preterm infants. In Fomon, S. J., Heird, W. C. eds. Energy and ProteinNeeds during Infancy. New York: Academic Press; 1986.
16. Ziegler, E. E. Protein in premature feeding. Nutrition1994;10:69-71.
17. Cairns, P. A., Stalker, D. J. Carnitine supplementation of parenterally fed neonates. Cochrane Database Syst Rev. 2000;4:CD000950.
18. Kanarek, K. S., Williams, P. R., Blair, C. Concurrent administration ofalbuminwith total parenteral nutrition in sicknewborn infants. J. Parenter. Enteral Nutr. 1992;16:49-53.
19. Ohls, R. K., Veerman, M.W., Christensen, R.D. Pharmacokinetics and effectiveness of recombinant erythropoietin administered to preterm infants by continuous infusion in total parenteral nutrition solution. J. Pediatr. 1996;128:518-23.
20. Kumpf, V. J. Parenteral ironsupplementation.Nutr. Clin.Pract. 1996;11:139-46.
21. Go, W. Breastfeeding and the use of human milk. Pediatrics1997;100:1035-9.
22. Ehrenkranz, R. A., Younes, N., Lemons, J. A. et al.Longitudinal growth of hospitalized very lowbirthweight infants. Pediatrics1999;104:280-9.
23. Mukarram Ali Baig, M., Habibullah, C. M., Swamy, M. et al.Studies on urea cycle enzyme levels in the human fetal liver at different gestational ages. Pediatr. Res. 1992;31:143-5.
24. Raiha, N. C., Suihkonen, J. Development of urea-synthesizing enzymes in human liver. Acta Paediatr. Scand. 1968;57: 121-4.
25. Wheeler, R. A., Jackson, A. A., Griffiths, D. M. Urea production and recycling in neonates. J. Pediatr. Surg. 1991;26:575-7.
26. Moran, B. J., Jackson, A. A. 15N-urea metabolism in the functioning human colon: luminal hydrolysis and mucosal permeability. Gut1990;31:454-7.
27. Gresham, E. L., Simons, P. S., Battaglia, F. C. Maternal-fetal urea concentration difference in man: metabolic significance. J. Pediatr. 1971;79:809-11.
28. Thureen, P. J., Melara, D., Fennessey, P. V., Hay, W.W. Jr. Effect of low versus high intravenous amino acid intake on very low birth weight infants in the early neonatal period. Pediatr. Res. 2003;53:24-32.
29. Shiff, Y., Eliakim, A., Shainkin-Kestenbaum, R. et al. Measurements of bone turnover markers in premature infants. J. Pediatr. Endocrinol.Metab. 2001;14:389-95.
30. Koo, W. W. Laboratory assessment of nutritional metabolic bone disease in infants. Clin. Biochem. 1996;29:429-38.
31. Koo, W. W., Hammami, M., Hockman, E. M. Use of fan beam dual energy x-ray absorptiometry to measure body composition of piglets. J. Nutr. 2002;132:1380-3.
32. Gutcher, G., Cutz, E. Complications of parenteral nutrition. Semin. Perinatol. 1986;10:196-207.
33. Clandinin, M. T., Van Aerde, J. E., Parrott, A. et al.Assessmentof feeding different amounts of arachidonicanddocosahexaenoic acids in preterm infant formulas on the fatty acid content of lipoprotein lipids. Acta Paediatr. 1999;88: 890-6.
34. Vanderhoof, J., Gross, S., Hegyi, T. et al.Evaluation of a longchain polyunsaturated fatty acid supplemented formula on growth, tolerance, and plasma lipids in preterminfants up to 48weeks postconceptional age. J. Pediatr.Gastroenterol.Nutr. 1999;29:318-26.
35. Clandinin, M. T., Claerhout, D. L., Lien, E. L. Docosahexaenoic acid increases thyroid-stimulating hormone concentration in male and adrenal corticotrophic hormone concentration in female weanling rats. J. Nutr. 1998;128:1257-61.
36. Clandinin, M. T., Van Aerde, J. E., Parrott, A. et al.Assessment of the efficacious dose of arachidonic and docosahexaenoic acids in preterm infant formulas: fatty acid composition of erythrocyte membrane lipids. Pediatr. Res. 1997;42:819-25.
37. Marconi, A. M., Paolini, C., Buscaglia, M. et al.The impact of gestational age and fetal growth on the maternal-fetal glucose concentration difference. Obstet. Gynecol. 1996;87:937-42.
38. Denne, S. C., Kalhan, S. C. Glucose carbon recycling and oxidation in human newborns. Am. J. Physiol. 1986;251:71-77.
39. Biesalski, H. K., Nohr, D. Importance of vitamin-A for lung functionanddevelopment.Mol.AspectsMed. 2003;24:431-40.
40. Shenai, J. P., Kennedy, K. A., Chytil, F., Stahlman, M. T. Clinical trial of vitamin A supplementation in infants susceptible to bronchopulmonary dysplasia. J. Pediatr. 1987;111:269-77.
41. Shenai, J. P., Chytil, F., Stahlman, M. T. Vitamin A status of neonates with bronchopulmonary dysplasia. Pediatr. Res. 1985;19:185-8.
42. Darlow, B. A., Graham, P. J. Vitamin A supplementation for preventing morbidity and mortality in very low birthweight infants. Cochrane Database Syst. Rev. 2002;4:CD000501.
43. Shenai, J. P., Mellen, B. G., Chytil, F. Vitamin A status and postnatal dexamethasone treatment in bronchopulmonary dysplasia. Pediatrics2000;106:547-53.
44. Brion, L. P., Bell, E. F., Raghuveer, T. S. Vitamin E supplementation for prevention of morbidity and mortality in preterm infants. Cochrane Database Syst. Rev. 2003;4:CD003665.
45. Fish, W. H., Cohen, M., Franzek, D., Williams, J. M., Lemons, J. A. Effect of intramuscular vitamin E on mortality and intracranial hemorrhage in neonates of 1000 grams or less. Pediatrics1990;85:578-84.
46. Johnson, L., Bowen, F. W. Jr, Abbasi, S. et al.Relationship of prolonged pharmacologic serum levels of vitamin E to incidence of sepsis and necrotizing enterocolitis in infants with birth weight 1, 500 grams or less. Pediatrics1985;75: 619-38.
47. Brion, L. P., Bell, E. F., Raghuveer, T. S., Soghier, L. What is the appropriate intravenous dose of vitamin E for very-low-birthweight infants? J. Perinatol. 2004;24:205-7.
48. Scaglia, F., Longo, N. Primary and secondary alterations of neonatal carnitine metabolism. Semin. Perinatol. 1999;23:152-61.
49. Shortland, G. J., Walter, J. H., Stroud, C. et al.Randomised controlled trial of L-carnitine as a nutritional supplement in preterm infants. Arch. Dis. Child Fetal Neonatal Ed. 1998;78:F185-8.
50. Kumar, M., Kabra, N. S., Paes, B. Role of carnitine supplementation in apnea of prematurity: a systematic review. J. Perinatol. 2004;24:158-63.
51. O’Donnell, J., Finer, N. N., Rich, W., Barshop, B. A., Barrington, K. J. Role of L-carnitine inapneaof prematurity: a randomized, controlled trial. Pediatrics2002;109:622-6.
52. Whitfield, J., Smith, T., Sollohub, H., Sweetman, L., Roe, C. R. Clinical effects of L-carnitine supplementation on apnea and growth in very low birth weight infants. Pediatrics2003;111:477-82.
53. Lozoff, B., Jimenez, E., Wolf, A. W. Long-term developmental outcome of infants with iron deficiency. N. Engl. J. Med. 1991;325:687-94.
54. Lozoff, B., Wolf, A.W., Jimenez, E. Iron-deficiency anemia and infant development: effects of extended oral iron therapy. J. Pediatr. 1996;129:382-9.
55. Lozoff, B., Jimenez, E., Hagen, J., Mollen, E., Wolf, A. W. Poorer behavioral and developmental outcome more than 10 years after treatment for iron deficiency in infancy. Pediatrics2000;105:E51.
56. Lozoff, B., Brittenham, G. M., Wolf, A.W. et al.Iron deficiency anemia and iron therapy effects on infant developmental test performance. Pediatrics1987;79:981-95.
57. Deinard, A. S., List, A., Lindgren, B., Hunt, J. V., Chang, P. N. Cognitive deficits in iron-deficient and iron-deficient anemic children. J. Pediatr. 1986;108:681-9.
58. Rao, R., Georgieff, M. K. Neonatal iron nutrition. Semin. Neonatol. 2001;6:425-35.
59. Chockalingam, U. M., Murphy, E., Ophoven, J. C., Weisdorf, S. A., Georgieff, M. K. Cord transferrin and ferritin values in newborn infants at risk for prenatal uteroplacental insufficiency and chronic hypoxia. J. Pediatr. 1987;111:283-6.
60. Georgieff, M. K., Landon, M. B., Mills, M. M. et al.Abnormal iron distribution in infants of diabetic mothers: spectrumand maternal antecedents. J. Pediatr. 1990;117:455-61.
61. Morton, R. E., Nysenbaum, A., Price, K. Iron status in the first year of life. J. Pediatr. Gastroenterol. Nutr. 1988;7:707-12.
62. Georgieff, M. K., Wewerka, S.W., Nelson, C. A., Deregnier, R. A. Iron status at 9 months of infants with lowiron stores at birth. J. Pediatr. 2002;141:405-9.
63. Ng, P. C., Lam, C. W., Lee, C. H. et al.Hepatic iron storage in very lowbirthweight infants after multiple blood transfusions. Arch. Dis. Child. Fetal Neonatal Ed. 2001;84:101-105.
64. Clemmons, D. R., Klibanski A., Underwood, L. E. et al.Reduction of plasma immunoreactive somatomedin C during fasting in humans. J. Clin. Endocrinol. Metab. 1981;53: 1247-50.
65. Spiekerman, A. M. Proteins used in nutritional assessment. Clin. Lab.Med. 1993;13:353-69.
66. Church, J. M., Hill, G. L. Assessing the efficacy of intravenous nutrition in general surgical patients: dynamic nutritional assessment with plasma proteins. J. Parenter. Enteral Nutr. 1987;11:135-9.
67. Reading, R. F., Ellis, R., Fleetwood, A. Plasma albumin and total protein in pretermbabies frombirth to eightweeks. Early Hum. Dev. 1990;22:81-7.
68. Morton, A. G., Tavill, A. S. The role of iron in the regulation of hepatic transferrin synthesis. Br. J. Haematol. 1977;36: 383-94.
69. Georgieff, M. K., Amarnath, U. M., Murphy, E. L., Ophoven, J. J. Serum transferrin levels in the longitudinal assessment of protein-energy status in preterminfants. J. Pediatr. Gastroenterol. Nutr. 1989;8:234-9.
70. Ritchie, R. F., Palomaki, G. E., Neveux, L. M., Navolotskaia, O. Reference distributions for the negative acute-phase proteins, albumin, transferrin, and transthyretin: a comparison of a large cohort to the world’s literature. J. Clin. Lab. Anal. 1999;13:280-6.
71. Georgieff, M. K., Sasanow, S. R., Pereira, G. R. Serum transthyretin levels and protein intake as predictors of weight gain velocity in premature infants. J. Pediatr. Gastroenterol. Nutr. 1987;6:775-9.
72. Georgieff, M. K., Chockalingam, U. M., Sasanow, S. R. et al.The effect of antenatal betamethasone on cord blood concentrations of retinol-binding protein, transthyretin, transferrin, retinol, and vitamin E. J. Pediatr. Gastroenterol. Nutr. 1988;7:713-7.
73. Georgieff, M. K., Mammel, M. C., Mills, M. M. et al.Effect of postnatal steroid administration on serumvitamin A concentrations in newborn infants with respiratory compromise. J. Pediatr. 1989;114:301-4.
74. Gil, A., Faus, M. J., Robles, R. et al.Urinary 3-methylhistidine derivative as indicator of nutrients intake in low-birth-weight infants. Horm.Metab. Res. 1984;16:667-70.
75. Shew, S. B., Keshen, T. H., Glass, N. L., Jahoor, F., Jaksic, T. Ligation of a patent ductus arteriosus under fentanyl anesthesia improves protein metabolism in premature neonates. J. Pediatr. Surg. 2000;35:1277-81.
76. Clemmons, D. R., Busby, W. H., Arai, T. et al. Role of insulin-like growth factor binding proteins in the control of IGF actions. Prog. Growth Factor Res. 1995;6:357-66.
77. Firth, S. M., Baxter, R. C. Cellular actions of the insulinlike growth factor binding proteins. Endocr. Rev. 2002;23: 824-54.
78. Baxter, R. C. Insulin-like growth factor (IGF)-binding proteins: interactions with IGFs and intrinsic bioactivities. Am. J. Physiol. Endocrinol.Metab. 2000;278:E967-76.
79. Hwa, V., Oh, Y., Rosenfeld, R.G. Insulin-like growthfactorbinding proteins: a proposed superfamily. Acta Paediatr. Suppl. 1999;88:37-45.
80. Hwa, V., Oh, Y., Rosenfeld, R. G. The insulin-like growth factor-binding protein (IGFBP) superfamily. Endocr. Rev. 1999;20:761-87.
81. D’Costa, A. P., Ingram, R. L., Lenham, J. E., Sonntag, W. E. The regulation and mechanisms of action of growth hormone and insulin-like growth factor 1 during normal ageing. J. Reprod. Fertil. Suppl. 1993;46:87-98.
82. Ghigo, E., Arvat, E., Gianotti, L. et al.Human aging and the GH-IGF-I axis. J. Pediatr. Endocrinol. Metab. 1996;9: 271-8.
83. Ghigo, E., Arvat, E., Gianotti, L. et al.Hypothalamic growth hormone-insulin-like growth factor-I axis across the human life span. J. Pediatr. Endocrinol. Metab. 2000;13 (Suppl. 6):1493-502.
84. Rajaram, S., Carlson, S. E., Koo, W.W., Rangachari A., Kelly, D.P. Insulin-like growth factor (IGF)-I and IGF-binding protein 3 during the first year in termand preterminfants. Pediatr. Res. 1995;37:581-5.
85. Schutt, B. S., Weber, K., Elmlinger, M. W., Ranke, M. B. Measuring IGF-I, IGFBP-2 and IGFBP-3 from dried blood spots on filterpaperisnotonlypracticalbutalso reliable.GrowthHorm. IGF Res. 2003;13:75-80.
86. Smith, W. J., Underwood, L. E., Keyes, L., Clemmons, D. R. Use of insulin-like growth factor I (IGF-I) and IGF-binding protein measurements to monitor feeding of premature infants. J. Clin. Endocrinol.Metab. 1997;82:3982-8.
87. Tovar, A. R., Halhali, A., Torres, N. Effect of nutritional rehabilitation of undernourished rats on serum insulin-like growth factor (IGF)-I and IGF-binding proteins. Rev. Invest. Clin. 1999;51:99-106.
88. Kita, K., Nagao, K., Taneda, N. et al.Insulin-like growth factor binding protein-2 gene expression can be regulated by diet manipulation in several tissues of young chickens. J. Nutr. 2002;132:145-51.
89. Smith, W. J., Nam, T. J., Underwood, L. E. et al. Use of insulinlike growth factor-binding protein-2 (IGFBP-2), IGFBP-3, and IGF-I for assessing growth hormone status in short children. J. Clin. Endocrinol.Metab. 1993;77:1294-9.
90. Lemons, J. A., Bauer, C. R., Oh, W. et al.Very low birth weight outcomes of theNational Institute of ChildHealth and Human Development Neonatal Research Network, January 1995throughDecember1996.NICHDNeonatalResearchNetwork. Pediatrics2001;107:E1.
91. Pauls, J., Bauer, K., Versmold, H. Postnatal bodyweight curves for infants below 1000 g birth weight receiving early enteral and parenteral nutrition. Eur. J. Pediatr. 1998;157:416-21.
92. Alexander, G. R., Himes, J. H., Kaufman, R. B., Mor, J., Kogan M. A United States national reference for fetal growth. Obstet. Gynecol. 1996;87:163-8.
93. Clark, R. H., Thomas, P., Peabody, J. Extrauterine growth restriction remains a serious problem in prematurely born neonates. Pediatrics2003;111:986-90.
94. de Gamarra, M. E., Schutz, Y., Catzeflis, C. et al.Composition of weight gain during the neonatal period and longitudinal growth follow-up in premature babies. Int. J. Vitam. Nutr. Res. 1987;57:339.
95. Chessex, P., Reichman, B., Verellen, G. et al. Metabolic consequences of intrauterine growth retardation in very low birthweight infants. Pediatr. Res. 1984;18:709-13.
96. Putet, G., Senterre, J., Rigo, J., Salle, B. Nutrient balance, energy utilization, and composition ofweight gain in very-low-birthweight infants fed pooled human milk or a preterm formula. J. Pediatr. 1984;105:79-85.
97. Hermansen, M. G., Hermansen, M. C. The influence of equipmentweightsonneonataldailyweightmeasurements. Neonatal. Netw. 1999;18:33-6.
98. Epstein, H. T., Epstein, E. B. The relationship between brain weightandhead circumference frombirth to age 18 years.Am. J. Phys. Anthropol. 1978;48:471-3.
99. Bartholomeusz, H. H., Courchesne, E., Karns, C. M. Relationship between head circumference and brain volume in healthynormaltoddlers, children, andadults.Neuropediatrics2002;33:239-41.
100. Lindley, A. A., Benson, J. E., Grimes, C., Cole, T.M.III, Herman, A. A. The relationship in neonates between clinically measured head circumference and brain volume estimated from head CT-scans. Early Hum. Dev. 1999;56:17-29.
101. Gale, C. R., O’Callaghan, F. J., Godfrey, K. M., Law, C. M., Martyn, C. N. Critical periods of brain growth and cognitive function in children. Brain2004;127:321-9.
102. Georgieff, M. K., Hoffman, J. S., Pereira, G. R., Bernbaum, J. R., Hoffman-Williamson, M. Effect of neonatal caloric deprivation on head growth and 1-year developmental status in preterminfants. J. Pediatr. 1985;107:581-7.
103. Corkins, M. R., Lewis, P., Cruse, W., Gupta, S., Fitzgerald, J. Accuracy of infant admission lengths. Pediatrics2002;109:1108-11.
104. Battaglia, F. C., Lubchenco, L. O. A practical classification of newborn infants by weight and gestational age. J. Pediatr. 1967;71:159-63.
105. Lubchenco, L.O., Hansman, C., Boyd, E. Intrauterine growthin lengthandheadcircumference as estimated fromlive births at gestational ages from26 to 42weeks. Pediatrics1966;37:403-8.
106. Lubchenco, L. O., Hansman, C., Dressler, M., Boyd, E. Intrauterine growth as estimated from liveborn birth-weight data at 24 to 42weeks of gestation. Pediatrics1963;32:793-800.
107. Fenton, T. R. A new growth chart for preterm babies: Babson andBenda’s chart updated with recent data and a new format. BMC Pediatr. 2003;3:13.
108. Babson, S. G., Benda, G. I. Growth graphs for the clinical assessment of infants of varying gestational age. J. Pediatr. 1976;89:814-20.
109. Sherry, B., Mei, Z., Grummer-Strawn, L., Dietz, W. H. Evaluation of and recommendations for growth references for very low birth weight (< or = 1500 grams) infants in the United States. Pediatrics2003;111:750-8.
110. Guo, S. S., Roche, A. F., Chumlea, W. C., Casey, P. H., Moore, W. M. Growth in weight, recumbent length, and head circumference for preterm low-birthweight infants during the first three years of life using gestation-adjusted ages. Early Hum. Dev. 1997;47:305-25.
111. Gu, S. S., Wholihan, K., Roche, A. F., Chumlea, W. C., Casey, P. H.Weight-for-length reference data for preterm, low-birthweight infants. Arch. Pediatr. Adolesc.Med. 1996;150:964-70.
112. Dauncey, M. J., Gandy, G., Gairdner, D. Assessment of total body fat in infancy from skinfold thickness measurements. Arch. Dis. Child. 1977;52:223-7.
113. Sheng, H.P., Muthappa, P.B., Wong, W.W., Schanler, R. J. Pitfalls of body fat assessments in premature infants by anthropometry. Biol. Neonate1993;64:279-86.
114. McGowan, A., Jordan, M., MacGregor, J. M. J. Skinfold thickness in neonates. Biol. Neonate1974;25:66-84.
115. Catalano, P. M., Thomas, A. J., Avallone, D. A., Amini, S. B. Anthropometric estimation of neonatal body composition. Am. J. Obstet. Gynecol. 1995;173:1176-81.
116. Ziegler, E. E., O’Donnell, A. M., Nelson, S. E., Fomon, S. J. Body composition of the reference fetus. Growth1976;40: 329-41.
117. Fomon, S. J., Nelson, S. E. Body composition of the male and female reference infants. Annu. Rev. Nutr. 2002;22:1-17.
118. Butte, N. F., Hopkinson, J. M., Wong, W. W., Smith, E. O., Ellis, K. J. Body composition during the first 2 years of life: an updated reference. Pediatr. Res. 2000;47:578-85.