[1] King Saud Univ, Coll Med, Pediat Dept, Pediat Intens Care Unit, Riyadh 11362, Saudi Arabia
[2] King Saud Univ Med City, Dept Family & Community Med, Riyadh 11362, Saudi Arabia
[3] King Saud Univ, Coll Med, Evidence Based Hlth Care & Knowledge Translat Res, Family & Community Med Dept, Riyadh 11362, Saudi Arabia
[4] Johns Hopkins Aramco Healthcare, Specialty Internal Med & Qual Dept, Dhahran 34465, Saudi Arabia
[5] Indiana Univ, Sch Med, Dept Med, Infect Dis Div, Indianapolis, IN 46202 USA
[6] Johns Hopkins Univ, Sch Med, Dept Med, Infect Dis Div, Baltimore, MD 21218 USA