Department of Epidemiology, Faculty of Military Preventive Medicine, Army Medical University(Third Military Medical University)
Department of Thoracic Surgery, Second Affiliated Hospital of Army Medical University (Third Military Medical University)
Institute of Respiratory Diseases, Key Laboratory of Respiratory Diseases, Second Affiliated Hospital of Army Medical University (Third Military Medical University)
Institute of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University
Digestive Disease Center, Third Affiliated Hospital of Chongqing Medical University