1. Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xiʼan Jiaotong University, Xiʼan, China
2. Shaanxi Provincial Key Laboratory of Magnetic Medicine, The First Affiliated Hospital of Xiʼan Jiaotong University, Xiʼan, China
3. Department of Gastroenterology, The First Affiliated Hospital of Xiʼan Jiaotong University, Xiʼan, China