Seow Kok-Min, Hwang Jiann-Loung, Tsai Yieh-Loong, Lin Yu-Hung, Hsieh Bih-Chwen, Huang Shih-Chia
Department of Obstetrics and Gynecology, Shin Kong Wu-Ho-Su Memorial Hospital, Taipei, Taiwan.
BJOG. 2002 Sep;109(9):1072-3. doi: 10.1111/j.1471-0528.2002.01080.x.