Pitfalls of pharmacoepidemiology.
Skegg
D C
DC
D003276:Contraceptives, Oral / Q000009:adverse effects*; D003625:Data Collection / Q000592:standards; D016208:Databases, Factual / Q000592:standards*; D005260:Female; D006801:Humans; D013923:Thromboembolism / Q000139:chemically induced*; D020246:Venous Thrombosis / Q000139:chemically induced*
D003276:Contraceptives, Oral