title: Research on new methods of emergency contraception.
authors.affiliation: Special Programme of Research, Development Research Training in Human Reproduction, World Health Organization (WHO), Geneva, Switzerland.
authors.forename: H
authors.initials: H
authors.lastname: von Hertzen
authors.forename: P F
authors.initials: PF
authors.lastname: Van Look
mesh_terms: D000028:Abortion, Induced; D003282:Contraceptives, Postcoital, Hormonal / Q000008:administration & dosage* / Q000009:adverse effects; D003283:Contraceptives, Postcoital, Synthetic / Q000008:administration & dosage* / Q000009:adverse effects; D004305:Dose-Response Relationship, Drug; D004334:Drug Administration Schedule; D010064:Embryo Implantation / Q000187:drug effects; D005260:Female; D006801:Humans; D011247:Pregnancy
chemical_list: D003282:Contraceptives, Postcoital, Hormonal; D003283:Contraceptives, Postcoital, Synthetic