Interdisciplinary European Guidelines on Metabolic and Bariatric Surgery

(OB)-O-a Klinika, Centre for Treatment of Obesity and Metabolic Disorders, 1st Faculty of Medicine, Charles University, Prague, Czech Republic, (b)Division of Endocrinology, Metabolism and Diabetes, Istanbul University Cerrahpasa Medical Faculty, Istanbul, Turkey, (c)Department of Nutrition, Heart and Metabolism Division, Pitie Salpetriere University Hospital (AP-HP) University Pierre et Marie Curie-Paris 6, Institute of Cardiometabolism and Nutrition (ICAN) Paris, France, (d)Medical School, University of Genoa, Genoa, Italy, (e)Department of Surgery Complutense University of Madrid, Hospital Clinico 'San Carlos', Madrid, Spain, (f)Sachsenhausen Hospital and Centre for Minimally Invasive Surgery, Johan Wolfgang Goethe University, Frankfurt/M., Germany, (g)Obesity Surgery Service, Centre of Endosurgery and Lithotripsy Moscow, Russia, (h)Department of Endocrinology and Nutrition, Clinica Universidad de Navarra, CIBERobn, Instituto de Salud Carlos III, Pamplona, Spain