Department of Gastrointestinal Surgery (Surgical Oncology);
Affiliated Hospital of Qinghai University;
Department of Public Health and Medical Statistics;
School of Medicine of Qinghai University;
Key Laboratory of High Altitude Medicine of Ministry of Education;
Qinghai University;
Department of Digestive Medicine;
People’s Hospital of Qinghai Province;
Department of Digestive Medicine;
Affiliated Hospital of Qinghai University;
Department of Medical Oncology;
Affiliated Hospital of Qinghai University;
Consultation Centre of Clinical Pathology;
Affiliated Hospital of Qinghai University;