[1
]
Department of Essential Surgery, Xiangya Hospital, Central South University, Changsha,
Hunan, 410008, People's Republic of China.
[2
]
Department of Epidemiology and Health Statistics, Xiangya School of Public Health,
Central South University, Changsha, Hunan, 410078, People's Republic of China.
[3
]
Day Surgery Center, Xiangya Hospital, Central South University, Changsha, Hunan, 410008,
People's Republic of China.
[4
]
Department of Essential Surgery, Xiangya Hospital, Central South University, Changsha,
Hunan, 410008, People's Republic of China. dymkingdom@163.com.
[5
]
Department of Essential Surgery, Xiangya Hospital, Central South University, Changsha,
Hunan, 410008, People's Republic of China. dymkingdom@csu.edu.cn.