title: Vaginal bleeding in early pregnancy.
authors.forename: A
authors.initials: A
authors.lastname: Allan
mesh_terms: D000022:Abortion, Spontaneous / Q000209:etiology; D005260:Female; D006801:Humans; D011247:Pregnancy; D011249:Pregnancy Complications, Cardiovascular / Q000209:etiology*; D011261:Pregnancy Trimester, First; D011262:Pregnancy Trimester, Second; D011271:Pregnancy, Ectopic / Q000209:etiology; D012203:Rh Isoimmunization / Q000517:prevention & control; D014592:Uterine Hemorrhage / Q000209:etiology*