1. Department of Surgery, Hamad Medical Corporation, Doha, Qatar.
2. College of Medicine, Qatar University, Doha, Qatar.
3. Weill Cornell Medicine-Qatar, Doha, Qatar.
4. Schools of Health and Education, University of Skovde, Skövde, Sweden.
5. Department of Bariatric Surgery/Bariatric Medicine, Hamad Medical Corporation, Doha, Qatar.