1. Department of Urology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning 121001, China
2. Department of Otorhinolaryngology Head and Neck Surgery, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning 121001, China
3. Department of Surgery, Golmud Second People’s Hospital, Haixi Mongolian and Tibetan Autonomous Prefecture, Golmud, Qinghai 816099, China