- 
							Tomonori ANBO
														
									Division of Gastroenterology, Sapporo Kousei Hospital
							 
- 
							Yoshio MURASIMA
														
									Hokkaido Health Care Center of The Seaman's Insurance.
							 
- 
							Akimichi IMAMURA
														
									Hokkaido Health Care Center of The Seaman's Insurance.
							 
- 
							Toshihiro SUGA
														
									Division of Gastroenterology, Sapporo Kousei Hospital
							 
- 
							Kunihiro TERAKURA
														
									Hokkaido Health Care Center of The Seaman's Insurance.