1. Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China (mainland)
2. Department of Hepatobiliary Surgery, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China (mainland)
3. Department of General Surgery, The 5th People’s Hospital of Jinan, Jinan, Shandong, China (mainland)
4. Department of Thoracic Surgery, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China (mainland)
5. Department of Urology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China (mainland)
6. Department of Anesthetics, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China (mainland)
7. Department of Gastrointestinal Surgery, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, Shandong, China (mainland)
8. Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China (mainland)
9. Department of Cardiovascular Surgery, Guangzhou Red Cross Hospital, Medical college, Jinan University, Guangzhou, Guangdong, China (mainland)