[1] Nagoya City Univ, Grad Sch Med Sci, Dept Gastroenterol & Metab, Mizuho Ku, Nagoya, Aichi 4678601, Japan
[2] Okazaki City Med Assoc, Publ Hlth Ctr, Okazaki, Aichi, Japan
[3] Nagoya City Univ, Grad Sch Med Sci, Dept Expt Pathol & Tumor Biol, Nagoya, Aichi 4678601, Japan