title: Letter: Transvaginal approach for sampling of fetal blood.
mesh_terms: D000032:Abortion, Therapeutic; D001800:Blood Specimen Collection / Q000379:methods*; D005260:Female; D005312:Fetal Blood; D006801:Humans; D010920:Placenta / Q000098:blood supply; D011247:Pregnancy; D014621:Vagina