1 Department of Urology (Drs. Cheng and Liu), Chang Gung Memorial Hospital, Chiayi, Taiwan.
2 Department of Obstetrics and Gynecology (Dr. Chen), New Taipei Municipal Tu Cheng Hospital (Built and Operated by Chang Gung Medical Foundation), New Taipei City, Taiwan.
3 Department of Urology (Drs. Cheng and Liu), Chang Gung Memorial Hospital, Chiayi, Taiwan. Electronic address: [email protected].