1. Department of Chemical Engineering and Biotechnology, Graduate Institute of Biochemical and Biomedical Engineering, National Taipei University of Technology, Taipei 10608, Taiwan, R.O.C.
2. Department of Internal Medicine, Queen Elizabeth The Queen Mother Hospital, Margate CT9 4AN, UK
3. Division of Colorectal Surgery, Department of Surgery, Mackay Memorial Hospital, Taipei 10491, Taiwan, R.O.C.