1. Department of Surgery ,Minimally Invasive Surgery Research Center, Division of Minimally Invasive and Bariatric Surgery, Rasool-e Akram Hospital, School of Medicine, Iran University of Medical Sciences
2. Center of Excellence of European Branch of International Federation for Surgery of Obesity, Hazrat_e Rasool Hospital, Tehran
3. Advanced Biomedical Sciences Department, “Federico II” University, Napoli, Italy
4. Urmia University of Medical Sciences, Urmia, Iran