1. Division of Gastroenterology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA.
2. Department of General Surgery, First Affiliated Hospital, Medical School of Xi’an Jiaotong University, Xi’an 710061, People’s Republic of China.
3. Section of Thoracic Surgery, Department of Surgery, University of Michigan, Ann Arbor, MI 48109, USA.
4. Department of Pathology, University of Michigan, Ann Arbor, MI 48109, USA.
5. Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA.
6. Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109, USA.