Wei Tien-Yung, Hsieh Ching-Chang, Lo Tsia-Shu
Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital, Linkou Medical Center, Taiwan, Republic of China.
Aust N Z J Obstet Gynaecol. 2003 Oct;43(5):391-2. doi: 10.1046/j.0004-8666.2003.00123.x.