Joel Faintuch is Associate Professor of Surgery, São Paulo University Medical School, Head of the Nutrology Residency Program, Hospital das Clinicas, Sao Paulo, and Editor-in-Chief, Brazilian Journal of Clinical Nutrition. He was Executive Director of the Brazilian Society of Bariatric and Metabolic Surgery (1999-2002) and is currently Associated Editor, Obesity Surgery (USA). Joel Faintuch is a former International Guest Scholar, American College of Surgeons, USA and Honorary Member of three international societies (SBNPE, FELANPE and SBCBM). Salomao Faintuch is Assistant Professor of Radiology, Harvard Medical School, and Staff Radiologist in Vascular & Interventional Radiology, Beth Israel Deaconess Medical Center, Boston, USA. He was Research Scholar of the Radiological Society of North America/RSNA, 2008-2010, and is currently Chairman, RSNA Daily Bulletin Editorial Board, RSNA Public Information Committee. He has been active in a variety of research projects, including gastrointestinal surgery and minimally invasive procedures, and serves on the Editorial Board of specialty journals.