Dizygotic twinning, cycle day of insemination, and erotic potential of Orthodox Jews.
D003075:Coitus; D005260:Female; D006801:Humans; D007599:Judaism; D007989:Libido; D008297:Male; D008597:Menstrual Cycle; D011247:Pregnancy; D012071:Religion and Sex; D014427:Twins; D014429:Twins, Dizygotic