Medical Societies
- Association of Physicians of the National Institute of Medical Sciences and Nutrition Salvador Zubirán, Active Member since 2002.
- Japanese Society of Pathology International Membership. November 1997
- Member of the New York Academy of Science November 1997.
- Science Director, Noguchi Memorial Research Institute, Nagoya Japan, June 1998.
- The Japanese Society of Gastroenterology , (active member) since 1996.
- International Gastric Cancer Association Founder membership Tokyo Japan, February 15. 1996.
- Mexican Col1ege of Gastroenterology. Specialty in Gastrointestinal Endoscopy, December 7, 1991.
- Mexican Society of Gastroenterology. Active Member .Since December7, 1990.
- Mexican Society of Gastrointestinal Endoscopy. Titular member September 22, 1990.
- AMDA International Medical Association. Prospectus. Association of Medical Doctors for Asia.
- United Medical Association Prospectus. Tokyo Japan , September 1989.
- Medical Society "Eduardo Liceaga" General Hospital of Mexico, 1994.