Dr. Luciano Antozzi MD, Director, Upper GI and Bariatric Surgery Department, Hospital Italiano Regional del Sur; Co-Director, Center for Special Surgery, Bahía Blanca; Faculty, IFSO World Congress and IFSO LAC; Reviewer, Obesity Surgery Journal; Author, multiple international publications and book chapters in bariatric and metabolic surgery. Bariatric and Upper GI Surgery. Bahía Blanca, Argetina.