[1] I Shou Univ, E Da Canc Hosp, Dept Gen Surg, 21 Yi Da Rd, Kaohsiung 82445, Taiwan
[2] I Shou Univ, Coll Med, Sch Med, Kaohsiung 82445, Taiwan
[3] Chi Mei Med Ctr, Dept Anesthesiol, Tainan 71004, Taiwan
[4] Chia Nan Univ Pharm & Sci, Dept Hosp & Hlth Care Adm, Coll Recreat & Hlth Management, Tainan 71710, Taiwan
[5] Kaohsiung Med Univ, Dept Healthcare Adm & Med Informat, Kaohsiung 80708, Taiwan
[6] Natl Sun Yat Sen Univ, Dept Business Management, Kaohsiung 80424, Taiwan
[7] Kaohsiung Med Univ Hosp, Dept Med Res, Kaohsiung 80756, Taiwan
[8] China Med Univ, China Med Univ Hosp, Dept Med Res, Taichung 40402, Taiwan
[9] Chi Mei Med Ctr, Dept Occupat Med, Liouying 73657, Taiwan
[10] Chi Mei Med Ctr, Dept Occupat Med, Tainan 71004, Taiwan
[11] Southern Taiwan Univ Sci & Technol, Dept Leisure Recreat & Tourism Management, Tainan 71005, Taiwan
[12] I Shou Univ, Coll Med, Kaohsiung 82445, Taiwan
[13] I Shou Univ, E Da Canc Hosp, Dept Hematol Oncol, Kaohsiung 82445, Taiwan
[14] I Shou Univ, E Da Canc Hosp, Dept Gastroenterol & Hepatol, Kaohsiung 82445, Taiwan
[15] I Shou Univ, E Da Hosp, Dept Gastroenterol & Hepatol, Kaohsiung 82445, Taiwan
[16] I Shou Univ, E Da Canc Hosp, Dept Colon & Rectal Surg, Kaohsiung 82445, Taiwan
[17] I Shou Univ, E Da Dachang Hosp, Dept Gastroenterol & Hepatol, Kaohsiung 80794, Taiwan
[18] I Shou Univ, E Da Canc Hosp, Dept Med Educ & Res, Kaohsiung 82445, Taiwan
[19] Chi Mei Med Ctr, Dept Gen Surg, Liouying 73657, Taiwan