Chang Cheng-Chang, Peng Mou-Yun, Lai Hung-Cheng, Yu Mu-Hsien, Chu Tang-Yuan
Department of Obstetrics and Gynecology, Tri-Service General Hospital, Taipei, Taiwan.
Acta Obstet Gynecol Scand. 2004 Nov;83(11):1093-4. doi: 10.1111/j.0001-6349.2004.0122c.x.