1. From the Department of Internal Medicine, Hotel-Dieu de France Hospital, Beirut, Lebanon
2. Correspondence: Fady G. Haddad, MD Department of Internal Medicine, Hotel-Dieu de France Hospital, Saint Joseph University, Alfred Naccache Street, PO Box 166830, Beirut, Lebanon T: +961-3-853-314 F: +961-1-397-772 prfghaddad@yahoo.com