1. Orthopedics Department, Medcare Hospital, Dubai, UAE
2. OrthoCure Medical Center, Dubai, UAE
3. Orthopedics Department, Hamad General Hospital, Doha, Qatar
4. Spine Unit, University of Missouri, MO, USA
5. King Abdullah International Medical Research Center(KAIMRC)/ King Saud Bin-Abdulaziz University for Health Sciences (KSAU-HS)/ King Abdulaziz Medical City (KAMC), Ministry of National Guard-Health Affairs (MNGHA), Riyadh, Saudi Arabia