J Infect Public Health 2019 Mar - Apr;12(2):171-177. Epub 2018 Oct 16.
Department of Family & Community Medicine, College of Medicine and King Khaled Hospital, King Saud University, Riyadh, Saudi Arabia; Prince Sattam Chair for Epidemiology and Public Health Research, Department of Family and Community Medicine, College of Medicine, King Saud University, Riyadh, Saudi Arabia.