[1] Univ Jeddah, Fac Med, Dept Family & Community Med, Jeddah 21589, Saudi Arabia
[2] Minist Hlth, Dept Publ Hlth, Gen Directorate Hlth Affairs Aseer Reg, Abha 62529, Saudi Arabia
[3] Saudi Elect Univ, Coll Hlth Sci, Dept Publ Hlth, Riyadh 13323, Saudi Arabia
[4] Minist Hlth, Prevent Med & Publ Hlth Resident, Jeddah 21589, Saudi Arabia
[5] King Faisal Univ, Coll Med, Alahsa 36363, Saudi Arabia
[6] King Khalid Univ, Coll Med, Abha 62529, Saudi Arabia
[7] King Abdulaziz Univ, Fac Med, Jeddah 21589, Saudi Arabia
[8] Khaitan Primary Healthcare Ctr, Khaitan 83001, Kuwait
[9] Minist Hlth, Dept Family Med, Gen Directorate Hlth Affairs Aseer Reg, Abha 62529, Saudi Arabia
[10] Tribhuvan Univ Teaching Hosp, Inst Med, Dept Microbiol, Kathmandu 44600, Nepal
[11] Harvard Med Sch, Boston, MA 02115 USA