title: NIH research findings: When conception occurs one month after discontinuing the pill, twins are more likely.
mesh_terms: D000328:Adult; D003276:Contraceptives, Oral / Q000494:pharmacology*; D005260:Female; D005306:Fertilization; D006801:Humans; D008297:Male; D008875:Middle Aged; D011247:Pregnancy; D013997:Time Factors; D014427:Twins
chemical_list: D003276:Contraceptives, Oral