title: Update on problems of oral contraceptives.
mesh_terms: D003276:Contraceptives, Oral / Q000009:adverse effects; D004967:Estrogens / Q000009:adverse effects; D005260:Female; D006801:Humans; D010060:Ovulation / Q000187:drug effects
chemical_list: D003276:Contraceptives, Oral; D004967:Estrogens