1. Department of Oncology, The Third People’s Hospital of Hubei Province, (Affiliated Hospital of Jianghan University, Wuhan City, Hubei Province, China
2. Department of General Surgery, Huashan hospital affiliated to Fudan University, Shanghai city, China
3. No. 95828 Unit of the Chinese people's Liberation Army, Xi'an, Shaanxi Province, China
4. Department of General Surgery, The Second People's Hospital of Jiulongpo District, Chongqing, China