1991 –1993 Lecturer, Sackler School of Medicine, Tel Aviv University
1996 Senior Lecturer, Sackler School of Medicine, Tel Aviv University
1998 Research fellowship, Columbia-Presbyterian Comprehensive Cancer Center, Columbia University, NY
1999 –2004 Associate Professor of Medicine, Sackler School of Medicine, Tel Aviv University
1999 – 2003 Head - GI Oncology Section - Israel Association of Gastroenterology
2003 – 2007 Professor of Medicine and Gastroenterology, Sackler School of Medicine, Tel Aviv University
2003 – 2007 Member – Helsinki Committee (IRB), Tel Aviv Sourasky Medical Center
2004 – 2008 Head – MD thesis committee, Sackler School of Medicine, Tel Aviv University
2004 - Head – Committee for Grant Proposals - Chief Scientist’s Office, Ministry of Health
2004 – 2008 Member – Scientific Committee, United European Gastroenterology Foundation
2004 – 2008 Member - Board of Directors – The International Society of Gastroenterological Carcinogenesis (ISGC)
2005 – 2009 Cancer Prevention Committee - Israel Cancer Association
2006 – 2007 Member- Scientific Committee, The International Society of Gastroenterological Carcinogenesis (ISGC)
2008 – 2011 Co-chair OOTR
2010 Board Member- Association of National European and Mediterranean Societies of Gastroenterology
2011 Board Member- CHS International Educational Cancer Prevention Conference
Board Member- Update Committee of Gastrointestinal Malignancies, Israel Cancer ssociation
Head - Grants Committee. Sackler School of Medicine, Tel Aviv University
Incumbent of theYechiel and Helen Lieber Chair for Cancer Research
Board member, Cancer Biology Research Center, Tel Aviv University
Head - Cancer Research Center, Sackler School of Medicine and George S Wise,
Faculty of Science, Tel Aviv University
Head - Djerassi Oncology center
Head - Cancer Biology Research Center, Tel Aviv University
