[Letter: Relative estrogen deficiency caused by contraceptives].
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
D003276:Contraceptives, Oral; D004967:Estrogens; D008656:Mestranol; D008234:Lynestrenol
Relativer Ostrogenmangel durch Ovulationshemmer.