1. Plastic and Reconstructive Surgery Department, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar
2. College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
3. College of Medicine, King Saud bin Abdulaziz University for Health Sciences, Jeddah, Saudi Arabia
4. King Abdullah International Medical Research Center, Jeddah, Saudi Arabia
5. Plastic and Reconstructive Surgery Section, Department of Surgery, King Faisal Specialist Hospital & Research Centre, Riyadh, Saudi Arabia.