[1] Imam Abdulrahman Bin Faisal Univ, Gen Practice, Dammam, Saudi Arabia
[2] Qassim Univ, Gen Practice, Buraydah, Saudi Arabia
[3] Princess Nourah Bint Abdul Rahman Univ, Gen Practice, Riyadh, Saudi Arabia
[4] Dallah Hosp, Emergency Med, Riyadh, Saudi Arabia