title: The fertility of mothers of mongols.
mesh_terms: D000022:Abortion, Spontaneous / Q000453:epidemiology; D000328:Adult; D001722:Birth Order; D004314:Down Syndrome; D005260:Female; D005298:Fertility; D005313:Fetal Death; D006801:Humans; D008131:London; D008423:Maternal Age; D008599:Menstruation Disturbances / Q000453:epidemiology; D008875:Middle Aged; D011225:Pre-Eclampsia / Q000453:epidemiology; D011247:Pregnancy; D011248:Pregnancy Complications; D011293:Premenstrual Syndrome / Q000453:epidemiology