Why we need observational studies to evaluate the effectiveness of health care

British Medical Journal

Volumn 312, Issue 7040, 1996, Pages 1215-1218

  Black, Nick ^a  

^a LONDON SCHOOL OF HYGIENE AND TROPICAL MEDICINE   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

CLINICAL TRIAL; CONTROLLED CLINICAL TRIAL; HEALTH CARE; HUMAN; MEDICAL RESEARCH; PRIORITY JOURNAL; RANDOMIZED CONTROLLED TRIAL; SHORT SURVEY;

EID: 0029912547     PISSN: 09598146     EISSN: None     Source Type: Journal    
DOI: 10.1136/bmj.312.7040.1215     Document Type: Short Survey

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