1. Department of General Surgery, Xiangya Hospital, Central South University, Changsha, People’s Republic of China
2. Department of General Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
3. Department of Ophthalmology, The Fourth People's Hospital of Shenyang, Shenyang, People’s Republic of China
4. Department of Pediatrics, Yueqing Third People's Hospital, Yueqing, People’s Republic of China
5. Department of Thoracic surgery, Fujian Provincial Hospital, Fuzhou, People’s Republic of China