Twinning in postpill spontaneous abortions.
D000022:Abortion, Spontaneous / Q000235:genetics*; D003276:Contraceptives, Oral / Q000494:pharmacology*; D003280:Contraceptives, Oral, Synthetic / Q000494:pharmacology*; D005260:Female; D006801:Humans; D007621:Karyotyping; D011247:Pregnancy; D011272:Pregnancy, Multiple / Q000187:drug effects*; D014427:Twins
D003276:Contraceptives, Oral; D003280:Contraceptives, Oral, Synthetic