[1] Sapporo Med Univ, Dept Nursing, Surg Sci, Sapporo, Hokkaido 0608556, Japan
[2] Osaka Metropolitan Univ, Dept Hepatobiliary Pancreat Surg, Grad Sch Med, Abeno Ku, Osaka 5450051, Japan
[3] Natl Def Med Coll, Dept Surg, Tokorozawa 3598513, Japan
[4] Nippon Med Sch, Dept Gastrointestinal & Hepatobiliary Pancreat Sur, Tokyo 1138602, Japan
[5] Japan Hlth Care Univ, Dept Nursing, Sapporo 0620053, Japan
[6] Sapporo Med Univ, Ctr Med Educ, Dept Liberal Arts & Sci, Sapporo 0608556, Japan
[7] Kitasato Univ, Res & Educ Ctr Clin Pharm, Dept Clin Pharmacokinet, Tokyo 1088641, Japan
[8] Hokushinkai Megumino Hosp, Dept Anesthesiol, Eniwa 0611395, Japan
[9] Univ Occupat & Environm Hlth, Sch Med, Dept Infect Dis Med, Kitakyushu 8078555, Japan
[10] Natl Ctr Geriatr & Gerontol, Dept Gastrointestinal Surg, Obu 4748511, Japan
[11] Fujita Hlth Univ, Dept Anesthesiol & Crit Care Med, Toyoake 4701192, Japan
[12] Mie Prefectural Gen Med Ctr, Dept Gastrointestinal Surg, Yokkaich 5108561, Japan
[13] Toyonaka City Hosp, Dept Surg, Toyonaka 5608565, Japan
[14] Hyogo Med Univ, Dept Gastroenterol Surg, Nishinomiya 6638501, Japan
[15] Soseikai Gen Hosp, Dept Surg, Kyoto 6128473, Japan
[16] Int Univ Hlth & Welf, Dept Hepatobiliary Pancreat & Gastrointestinal Sur, Ichikawa 2720827, Japan
[17] Hiroshima Univ Hosp, Dept Infect Dis, Hiroshima 7348551, Japan
[18] Chukyo Hosp, Dept Intens Care Unit, Japan Community Hlth Care Org, Nagoya 4578510, Japan
[19] Sapporo Med Univ, Dept Nursing, Surg Sci, S1,W17,Chuo Ku, Sapporo, Hokkaido 0608556, Japan