1. Department of Histology and Embryology, School of Medicine, Shihezi University, Shihezi 832000, China
2. Department of Hepatobiliary Surgery, The First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi 832000, China
3. Department of Ultrasound Diagnosis, The First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi 832000, China
4. The First People's Hospital of Jining City, Jining 272000, China
5. Department of Histology and Embryology, School of Basic Medical Sciences, Xuzhou Medical University, Xuzhou 221004, China
6. Department of General Surgery, The Third People's Hospital of Chengdu, Chengdu 610031, China
7. School of Preclinical Medicine, Chengdu Medical College, Chengdu 610500, China