[1
]
Prince Sattam Bin Abdul Aziz Research Chair of Epidemiology and Public Health, College
of Medicine, King Saud University, Riyadh, Saudi Arabia.
[2
]
Department of Family and Community Medicine, College of Medicine, King Saud University,
Riyadh, Saudi Arabia.
[3
]
Department of Physiology, College of Medicine, King Saud University, Riyadh, Saudi
Arabia.