Document Type : Research Articles
Authors
1 Cancer Research Chair, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
2 Primary Health care department, High Institute of Public Health, Alexandria University, Egypt.
3 Family and Community Medicine, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
4 Medical Interns, College of Medicine, King Saud University, Riyadh Saudi Arabia.
5 Medical Interns, College of Medicine, Alfaisal University, Riyadh, Saudi Arabia.
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