1. Clinical Medical Research Center, Affiliated Hospital, Inner Mongolia Medical University, Huhhot, China
2. Shaanxi Key Laboratory of Degradable Biomedical Materials, Shaanxi R&D Center of Biomaterials and Fermentation Engineering, School of Chemical Engineering, Northwest University, Xi’an, China
3. Key Laboratory of Medical Cell Biology in Inner Mongolia Autonomous Region, Huhhot, China
4. Department of Gastrointestinal Surgery, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China