<awards and honors>

1991 Premier Physician Award, Crohn's and Colitis Foundation of America.
1997 Certificate of Teaching Excellence, Internal Medicine
1997 Residents, University Hospitals of Cleveland.
1997 Intestinal Disease Research Unit Lecture Award. University of Calgary, Calgary, Canada.
1999 Award of the "Agostinho Bettarello Medal" for contributions to gastroenterology research and teaching. University of S. Paulo School of Medicine, S. Paulo, Brazil.
1999 Honorary Member, Brazilian Association for Ulcerative Colitis and Crohn's Disease (ABCD). S. Paulo, Brazil.
1999 MERIT Award (R-37), NIDDK, NIH.
2000 Adjunct Professor, Division of Gastroenterology, University of Padua School of Medicine, Padua, Italy.
2000 Dean's Visiting Professor, West China University School of Medicine, Chengdu, Sichuan, P.R. China.
2000 Million Dollar Professor, Case Western Reserve University School of Medicine.
2001 Roy and Robert Kroc Distinguished Professor in Medicine and Immunology. University of California, Davis, School of Medicine.
2005 Honorary Member, Portuguese Society of Gastroenterology.
2005 Dr. Luois Zetzel Visiting Professor, Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
2007 The Clifford and Jane Anthony Endowed Chair in Digestive Disease Research and Education
2010 Honorary Foreign Member of the National Academy of Medicine of Brazil