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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
- Pulmonary Section, Department of Medicine, (C-110), PO Box 7897, Riyadh 11159, Kingdom of Saudi Arabia. Tel. +966 (1) 4777714 Ext. 5282. Fax. +966 (1) 2910371. E-mail: majidrees{at}hotmail.com
- Department of Medicine, Armed Forces Hospital, Riyadh, Kingdom of Saudi Arabia.
- Pulmonary Section, Department of Medicine, King Khalid National Guard, Jeddah, Kingdom of Saudi Arabia.