Maternal age, stillbirths, abortions and factors related to maternal blood groups: a hospital survey from Lahore (Punjab, Pakistan).
D000022:Abortion, Spontaneous / Q000209:etiology*; D000293:Adolescent; D000328:Adult; D001722:Birth Order; D001789:Blood Group Antigens; D005260:Female; D005313:Fetal Death / Q000209:etiology*; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D008423:Maternal Age; D010154:Pakistan; D011247:Pregnancy; D012737:Sex Factors
D001789:Blood Group Antigens