Widholm, O Serum levels of oestradiol and progesterone during administration of prostaglandin F2alpha for induction of abortion and labour. [electronic resource] - Acta obstetricia et gynecologica Scandinavica 1975 - 135-9 p. digital Publication Type: Journal Article ISSN: 0001-6349 Standard No.: 10.3109/00016347509156745 doi Subjects--Topical Terms: Abortion, InducedEstradiol--bloodFemaleGestational AgeHumansPregnancyProgesterone--bloodProstaglandins F--administration & dosage