1. Medical College of Soochow University, Suzhou 215123, Jiangsu Province, China
2. Department of General Surgery, Qinghai Provincial People's Hospital, Xining 810007, Qinghai Province, China
3. Department of Pathology, Qinghai Provincial People's Hospital, Xining 810007, Qinghai Province, China
4. Department of MRI, Qinghai Provincial People's Hospital, Xining 810007, Qinghai Province, China
5. Department of Clinical Pharmacy, Affiliated Hospital of Qinghai University, Xining 810007, Qinghai Province, China