Skouby Sven O, Jespersen Jørgen, Kluft Cornelis, Lowe Gordon D O, Norris Lucy, Samsioe Göran, Stevenson John
Department of Obstetrics and Gynecology, Frederiksberg Hospital, University of Copenhagen, DK 2000 Copenhagen F, Denmark.
Eur J Contracept Reprod Health Care. 2002 Dec;7(4):185-98. doi: 10.1080/713604368.