1. Department of Orthopaedics, Qilu Hospital, Shandong University, Jinan, Shandong, China (mainland)
2. Department of Urology, Weinan Central Hospital, Weinan, Shaanxi, China (mainland)
3. Department of Urology, Xuzhou Cancer Hospital, Affiliated Xuzhou Hospital of Jiangsu University, Xuzhou, Jiangsu, China (mainland)
4. Department of Urology, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, China (mainland)