1. General Surgery Department, Shohadaye Tajrish Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
2. Plastic and Reconstructive Surgery Division, Department of Medicine, Surgery and Neuroscience; ‘‘Santa Maria alle Scotte” Hospital, University of Siena, Siena, Italy
3. Clinical Research Development Center of Shohadaye Tajrish Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
4. General Surgery Department, Iran University of Medical Sciences, Tehran, Iran
5. Community Medicine Department, Shahid Beheshti University of Medical Sciences, Faculty of Medicine, Tehran, Iran
6. Plastic Surgery Department, Cleveland Clinic, Cleveland, OH, USA