1 Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.
2 Department of Obstetrics and Gynecology, Kaohsiung Medical University, Kaohsiung, Taiwan.
3 Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan. urolong@yahoo.com.tw.
4 Department of Obstetrics and Gynecology, Kaohsiung Medical University, Kaohsiung, Taiwan. urolong@yahoo.com.tw.