1. Department of Urology Surgery, Affiliated Renhe Hospital of China Three Gorges University Second Clinical Medical College of China Three Gorges University, Yichang, Hubei 443000, P.R. China
2. Department of Respiratory Medicine, Affiliated Renhe Hospital of China Three Gorges University Second Clinical Medical College of China Three Gorges University, Yichang, Hubei 443000, P.R. China
3. Department of Urology, The First Affiliated Hospital of Hainan Medical University, Haikou, Hainan 570100, P.R. China
4. Department of Urology Surgery, The Second Affiliated Hospital of Hainan Medical University, Haikou, Hainan 570100, P.R. China
5. Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China