Hsieh T T, Hou H C, Hsu J J, Hsieh C C, Jeng L B
Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital, Chang Gung College of Medicine and Technology, Taipei, Taiwan.
Acta Obstet Gynecol Scand. 1996 Jan;75(1):77-8. doi: 10.3109/00016349609033290.