[Twin pregnancy. (Twin births according to obstetrical material of the clinic in the past 12 years)].
D005260:Female; D006801:Humans; D009774:Obstetrics; D011247:Pregnancy; D011272:Pregnancy, Multiple / Q000706:statistics & numerical data*; D059285:Pregnancy, Twin; D014427:Twins / Q000706:statistics & numerical data*
PREGNANCY, MULTIPLE/statistics; TWINS/statistics