title: Learning from the past: an essential need.
authors.affiliation: NV Organon, Oss, The Netherlands.
authors.forename: R F
authors.initials: RF
authors.lastname: Kaper
mesh_terms: 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
chemical_list: D003276:Contraceptives, Oral