[1] Guangdong Pharmaceutical University,School of Public Health
[2] Sun Yat-sen University,Department of Epidemiology, School of Public Health
[3] Southern University of Science and Technology,School of Public Health and Emergency Management
[4] Yanting Cancer Hospital,Department of Cancer Prevention and Treatment
[5] Xi’an Aerospace General Hospital,Department of General Surgery
[6] Sun Yat-sen University,Department of Pediatric Surgery, the Sixth Affiliated Hospital
[7] the First Affiliated Hospital of Sun Yat-sen University,Department of Gastroenterology
[8] the Chinese University of Hong Kong,JC School of Public Health and Primary care