Estancias en Instituciones
- SEP CONACYT. Repatriación de Investigadores Mexicanos en el Extranjero. Ref. 990459. Instituto Nacional de Ciencias Médicas y Nutrición “Salvador Zubirán”. Departamento de Endoscopia. 1 de Agosto de 1999 al 12 de Julio del 2000
- Post-Graduate Course in Diagnosis of early gastrointestinal cancer and endoscopic treatment of early gastrointestinal cancer, Internal Medicine Division, Cancer Institute Hospital, Tokyo, Japan. Date: From, May 1, 1997 to May 1999.
- Postgraduate Senior Research. Visiting Fellow, Japanese Foundation for Cancer Research (JFCR), Helicobacter Pylori studies and carcinogenesis, Oncology and Molecular Gastroenterology, Department of Pathology, Cancer Institute, Tokyo Japan, Date: February 1, 1998toMarch 1,1999.
- Post. Doctoral Research Fellow, Japanese Society of Promotion and Science (JSPS) Research Fellow, Department of Pathology, Cancer Institute (Japanese Foundation for Cancer Research), Tokyo, Japan Date: May 1, 1997 to March 1, 1998.
- Post. Graduate Science Research Fellow The Foundation for Life Science Research Fellow at Institute of Whole Body Metabolism 340-2, Nauchi, Shiroi, Inba, Chiba 270-14, Japan. Date: June 4 to December 4, 1996.
- Post. Graduate Course, Visiting Research Doctor in Gastrointestinal Oncology at Cancer Institute Hospital Intemal Medicine Division Tokyo Japan. Date: February 1992 to 1996.
- Science and Technology Agency Fellowship, (STA, Post. Doctorate Research Fellow) Cancer Institute Hospital (Japanese Foundation for Cancer Research) .Kami-Ikebukuro 1-37-1, Toshima-ku, Tokyo 170, JAPAN Date: January 1,1994 to January 1,1995.
- Post. Graduate Course of Video. Endoscopy: Early Gastric Cancer Detection. Japan Intemational Cooperation Agency (JICA) and Consejo Nacional de Ciencia y Tecnología (CONACYT) México exchange program Gastrointestinal Endoscopy Place: National Cancer Center Hospital Tokyo, Japan. May 1988 to October 1989.
- Post. Graduate Course: The Japanese Foundation of Endoscopy, Training in the Field of II Early Cancer Diagnosis and Treatment Including: Gastrointestinal Endoscopy, Radiology and Surgery from May 9th, 1988 to June 30 th, 1989 at National Cancer Center Hospital. Tokyo Japan.