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Guidelines for sites linking to mayoclinic.orgDuke University, Durham, NC
Harvard University, Boston, MA
Brigham and Women's Hospital, Boston, MA
Brigham and Women's Hospital, Boston, MA
Brigham and Women's Hospital, Boston, MA
American Board of Internal Medicine - Gastroenterology
American Board of Internal Medicine
Professor of Medicine
See a listing of publications on PubMed, a service of the National Library of medicine.
See a description of research activities.
Learn about treatment of diseases and becoming a patient. Read more about medical services.
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