title: [Letter: Relative estrogen deficiency caused by contraceptives].
mesh_terms: D003276:Contraceptives, Oral / Q000009:adverse effects*; D003677:Deficiency Diseases / Q000139:chemically induced / Q000188:drug therapy; D004967:Estrogens; D005260:Female; D006801:Humans; D008234:Lynestrenol / Q000627:therapeutic use; D008656:Mestranol / Q000627:therapeutic use
chemical_list: D003276:Contraceptives, Oral; D004967:Estrogens; D008656:Mestranol; D008234:Lynestrenol
vernacular_title: Relativer Ostrogenmangel durch Ovulationshemmer.