[1] Kobe Univ, Dept Internal Med, Grad Sch Med, Div Gastroenterol, Kobe, Hyogo, Japan
[2] Natl Canc Ctr, Div Chemotherapy & Clin Res, Res Inst, Tokyo, Japan
[3] Natl Canc Ctr, Dept Hepatobiliary & Pancreat Oncol, Tokyo, Japan
[4] Natl Hosp Org, Osaka Natl Hosp, Dept Hepatobiliary Pancreat Surg, Osaka, Japan
[5] Osaka Med Coll, Dept Oral Surg, Osaka, Japan
[6] Tokyo Med Univ, Dept Gastrointestinal & Pediat Surg, Tokyo, Japan
[7] Jichi Med Univ, Dept Surg, Shimotsuke, Tochigi, Japan
[8] Osaka Med Ctr Canc & Cardiovasc Dis, Dept GI Canc Screening & Surveillance, Osaka, Japan
[9] Fukuoka Univ, Islet Inst, Fukuoka, Japan
[10] JR Tokyo Gen Hosp, Dept Gastrointestinal Surg, Tokyo, Japan
[11] Nihon Univ, Dept Radiol, Sch Dent Matsudo, Matsudo, Chiba, Japan
[12] Nihon Univ, Dept Oral Implant, Sch Dent Matsudo, Matsudo, Chiba, Japan
[13] Saitama Canc Ctr, Dept Oral Surg, Saitama, Japan
[14] Wakayama Med Univ, Dept Oral & Maxillofacial Surg, Wakayama, Japan
[15] Japan Agcy Med Res & Dev AMED CREST, Tokyo, Japan
[16] Kobe Univ, Grad Sch Med, Dept Internal Related, Metab Res, Kobe, Hyogo, Japan
[17] AMED, AMED CREST, Kobe, Hyogo, Japan