[1] Imam Mohammad Ibn Saud Islamic Univ, Coll Med, Dept Internal Med, Riyadh, Saudi Arabia
[2] Imam Mohammad Ibn Saud Islamic Univ, Coll Med, Riyadh, Saudi Arabia
[3] King Abdullah Bin Abdulaziz Univ Hosp, Dept Crit Care, Riyadh, Saudi Arabia
[4] King Saud Univ, Coll Med, Dept Surg, Riyadh, Saudi Arabia
[5] King Abdullah Med City Holy Capital KAMC HC, Dept Internal Med, Mecca, Saudi Arabia