He has made an effort to revitalize the APASL (Asian Pacific association for the study of the Liver) with Dr. S. Sarin and others for the last 10 years. He is a Co-Editor in Chief of Hepatology International, an official journal of APASL.
Now, he is the president of the two hospitals at Yamanashi, west of Tokyo, where, although scenic place with Mt. Fuji, hepatitis virus infection is epidemic and his homeland. He and his colleague have published 1,164 articles in English Literature including, NEJM 5, Lancet 6, Ann Int Med 6, Hepatology 59, and Gastroenterology 43. The total impact factor is 6,723 and 42,844 citations with an H-index of 104 as of July 1st, 2017.