1. Division of Colon and Rectal Surgery, Department of Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei 11490, Taiwan
2. Department of Computer Science and Information Engineering, National Taipei University of Technology, Taipei 10608, Taiwan
3. Department of Computer Science and Engineering, National Taiwan Ocean University, Keelung 20224, Taiwan
4. School of Public Health, National Defense Medical Center, Taipei 11490, Taiwan
5. Department of Biochemistry and Molecular Cell Biology, School of Medicine, Taipei Medical University, Taipei 11042, Taiwan