- Correspondence to Dr Rema A Afifi, Faculty of Health Sciences, Department of Health Promotion and Community Health, American University of Beirut, PO Box 11-0236 Riad El Solh, Beirut 1107 2020, Lebanon;
- Received September 25, 2014
- Accepted December 30, 2014
- First published January 24, 2015.
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