Case-control studies.
Shapiro
Eugene D
ED
Yale University School of Medicine, New Haven, CT, USA.
D016022:Case-Control Studies; D003141:Communicable Diseases / Q000453:epidemiology / Q000209:etiology / Q000628:therapy; D015986:Confounding Factors, Epidemiologic; D004196:Disease Outbreaks; D006801:Humans; D016015:Logistic Models; D015203:Reproducibility of Results; D012307:Risk Factors