1. Minimally Invasive Surgery Research Center, Division of Minimally Invasive and Bariatric Surgery, Iran University of Medical Sciences, Tehran, Iran
2. Division of General and Bariatric Surgery, Department of Surgery, University of Study of Campania “Luigi Vanvitelli”, Naples, Italy
3. Centre Hospitalier Universitaire Montpellier, Université de Montpellier 1, Montpellier, France
4. Minimally Invasive Surgery Research Center, Iran University of Medical Sciences, Tehran, Iran
5. Urmia University of Medical Sciences, Urmia, Iran
6. Department of Surgery, Minimally Invasive Surgery Research Center, Division of Minimally Invasive and Bariatric Surgery, Rasool-E Akram University Hospital, Tehran, Iran
7. Center of Excellence of European Branch of International Federation for Surgery of Obesity (IFSO), Hazrat-E Rasool University Hospital, Tehran, Iran