1. Department of Gastrointestinal Surgery, First Affiliated Hospital of Jinan University, Guangzhou, China.
2. Department of Basic Nursing, School of Nursing, Jinan University, Guangzhou, China.
3. Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, China.
4. Department of Thyroid Surgery, First Affiliated Hospital of Jinan University, Guangzhou, China.
5. Department of Intensive Care Unit, First Affiliated Hospital of Jinan University, Guangzhou, China.
6. Department of Surgery, Min-Sheng General Hospital, Taoyuan, Taiwan, China.