1. Department of Gastroenterological Surgery I
2. Transplant Surgery; Hokkaido University Graduate School of Medicine
3. Central Clinical Facilities, Division of Organ Transplantation; Hokkaido University Hospital; Sapporo Hokkaido Japan
4. Department of Surgical Gastroenterology and Transplantation; University of Copenhagen; Copenhagen Denmark
5. Department of Biological Process of Aging; Tokyo Metropolitan Institute of Gerontology; Itabashi Tokyo
6. Laboratory of Cancer Research, Department of Pathology; Hokkaido University Graduate School of Medicine; Sapporo Hokkaido
7. St. Maria Hospital Laboratory; Kurume Fukuoka Japan