Official Journal of the International Federation for the Surgery of Obesity and Metabolic Disorders, Obesity Surgery Society of Australia and New Zealand, Societá Italiana di Chirurgia dell’Obesitá, Osterreichische Gesellschaft für Adipositaschirurgie, Sociedade Brasileira de Cirurgia Bariatrica, BeNeLux Association of Bariatric Surgeons, Deutsche Gesellschaft für Chirurgie der Adipositas, Czech Obesity Society, Colegia Mexicana de Cirugia para la Obesidad A.C., Sociedad Española de Cirugia de la Obesidad, Greek Society for Bariatric Surgery, Israeli Association for Obesity Surgery, Sociedad Paraguaya de Cirugia de la Obesidad, Japanese Society for the Study of Obesity, Société Francaise de Chirurgie de l'Obésité, Yugoslav Obesity Surgery Society, Hellenic Bariatric Society for Morbid Obesity, Swiss Study Group for Morbid Obesity, Turkish Obesity Surgery Society, Egyptian Society for Bariatric Surgery, Society of Bariatric Surgeons of Russia, Ukrainian Association of Bariatric Surgery, Sociedad Argentina de Cirugia de la Obesidad, Kuwaiti Society for Bariatric Surgery, Portuguese Obesity Surgery Society, Polish Association for Prevention and Treatment of Obesity, British Obesity Surgery Society, Hungarian Bariatric Surgery Foundation, Asociación Panameña de Cirugía Bariatrica, Asociación Peruana de Cirugía Bariatrica y Obesidad Severa, Obesity Surgery Society of India, Chilian Department of Bariatric Surgery, Romanian Association for Bariatric Surgery & Complex Treatment of Obesity, Asia Pacific Bariatric Surgical Society, Seccion de Chirugia Bariatrica de la Sociedad Venezolana de Chírugia, South African Association for Obesity and Metabolism