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History
- Published online January 8, 2021.
Copyright & Usage
Copyright: © Saudi Medical Journal This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Author Information
- Department of Preventive Health, Ministry of Health, PO Box 2903, Riyadh 11461, Kingdom of Saudi Arabia. Tel. +996 (1) 478 7411 Fax. +996 (1) 473 1544.
- Department of Preventive Health, Ministry of Health, Riyadh, Kingdom of Saudi Arabia.
- Department of Preventive Health, Ministry of Health, Riyadh, Kingdom of Saudi Arabia.
- Department of Preventive Health, Ministry of Health, Riyadh, Kingdom of Saudi Arabia.