[1] King Saud Univ, Coll Med, Riyadh, Saudi Arabia
[2] King Saud Univ Med City, Dept Pediat, Riyadh, Saudi Arabia
[3] King Saud Univ, Fac Med, Riyadh, Saudi Arabia
[4] King Saud Univ Med City, Dept Family & Community Med, Riyadh, Saudi Arabia
[5] King Saud Univ, Riyadh, Saudi Arabia
[6] King Saud Univ, Coll Med, Res Ctr, Riyadh, Saudi Arabia
[7] King Saud Univ Med City, King Saud Univ, King Khalid Univ Hosp, Adult Crit Care Dept, Riyadh, Saudi Arabia
[8] King Faisal Specialist Hosp & Res Ctr, Dept Infect Dis, Riyadh, Saudi Arabia
[9] King Saud Univ, Dept Internal Med, Infect Dis Unit, Riyadh, Saudi Arabia
[10] King Saud Univ, Dept Pathol & Lab Med, Riyadh, Saudi Arabia
[11] King Saud Univ Med City, Riyadh, Saudi Arabia