[1] Alfaisal Univ, Coll Med, Biostat & Epidemiol, Riyadh, Saudi Arabia
[2] Alfaisal Univ, Coll Med, Biostat & Epidemiol, Riyadh, Saudi Arabia
[3] Alfaisal Univ, Coll Med, Family & Community Med, Riyadh, Saudi Arabia
[4] George Washington Univ Hosp, Internal Med, Washington, DC USA
[5] Alfaisal Univ, Coll Med, Psychiat, Riyadh, Saudi Arabia
[6] King Faisal Specialist Hosp & Res Ctr, Gen Surg, Riyadh, Saudi Arabia
[7] Univ Texas Dallas, Publ Affairs, Allen, TX USA
[8] Natl Neurosci Inst, Mental Hlth, Riyadh, Saudi Arabia