Yasuhito Tanaka, MD, PhD. Degrees and qualifications (specify institutions): Degree of MD: March 1991 (Nagoya City University). Degree of Doctor License: May 1991, License No. 337045. Degree of PhD: March 2001 (Nagoya City University Graduate School). Board Certified Member of the Japanese Society of Internal Medicine: September 30, 1994, License No. 7105. Board Certified Gastroenterologist of The Japanese Society of Gastroenterology: January 1, 1998, License No. 23337. Board Certified Hepatologist of the Japan Society of Hepatology: April 1, 1999, License No. 3162. : American Association for the Study of Liver Diseases, international member; Japanese Society of Internal Medicine; Japanese Society of Gastroenterology; Japan Society of Hepatology.