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Frank Gress, MD, is Professor of Medicine at Icahn School of Medicine, Division of Gastroenterology and Hepatology, Mount Sinai Hospital, New York, USA. Thomas Savides, MD, is Professor of Clinical Medicine, Division of Gastroenterology, University of California, San Diego, California, USA. Brenna Casey, MD, is Assistant Professor of Medicine, Division of Gastroenterology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA. Everson L. A. Artifon, MD, is Associate Professor of Surgery, Department of Surgery, University of São Paulo, São Paulo, Brazil.
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