[1] Hokkaido Univ, Inst Genet Med, Div Biomed Oncol, Sapporo 0600815, Japan
[2] Hokkaido Univ, Fac Med, Dept Gastroenterol Surg 2, Sapporo, Japan
[3] Hokkaido Univ Hosp, Ctr Dev Adv Diagnost, Sapporo, Japan
[4] Hokkaido Univ Hosp, Res Div Genome Compan Diagnost, Sapporo, Japan
[5] Hokkaido Univ Hosp, Dept Surg Pathol, Sapporo, Japan
[6] Hokkaido Univ, Global Stn Biosurfaces & Drug Discovery, Sapporo 0600812, Japan