1. Department of Population Medicine, College of Medicine, QU Health, Qatar University, Doha, Qatar.
2. Department of Plastic Surgery, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar.
3. Department of Surgery, Weill Cornell Medicine Qatar, Qatar Foundation, Doha, Qatar.
4. Department of Surgery, Sidra Medicine, Doha, Qatar.
5. Qatar Metabolic Institute, Hamad Medical Corporation, Doha, Qatar.
6. Division of Plastic and Reconstructive Surgery, Washington University, St. Louis, Missouri, USA.