Name: How to assess epidemiological studies -- Zaccai 80 (941): 140 -- Postgraduate Medical Journal
 Description: Author. Keyword(s) Vol the population from which it is drawn. Biasconfoundingand chance can threaten the quality of an Keywords: epidemiological studies. Epidemiology underpins good clinical research
Category: Confounding Epidemiology
Url: http://pmj.bmjjournals.com/cgi/content/full/80/941/140
Date: Oct 7, 2005
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