Learning from the past: an essential need.
Kaper
R F
RF
NV Organon, Oss, The Netherlands.
D003276:Contraceptives, Oral / Q000009:adverse effects*; D005260:Female; D006801:Humans; D011643:Publishing; D012307:Risk Factors; D012449:Safety; D013923:Thromboembolism / Q000139:chemically induced / Q000453:epidemiology; D014944:World Health Organization
D003276:Contraceptives, Oral