Affiliation: | 1. General Surgery Department of Guangdong General Hospital, Guangdong Academy of Medical Sciences, 106 Zhongshan Er Rd., Guangzhou, 510080, China 2. Department of Urology, Gansu Provincial Hospital, Lanzhou, China 3. Gynaecology and Obstetrics Department, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
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