aDivision of Infectious Diseases, Department of Internal Medicine, American University of Beirut Medical Center

bCenter for Infectious Disease Research, American University of Beirut, Beirut, Lebanon

Correspondence to Souha S. Kanj, MD, FACP, FIDSA, FRCP, FESCMID, FECMM, Professor of Medicine, Associate Vice President for Global Affairs, Head, Division of Infectious Diseases, Chairperson, Infection Control Program, American University of Beirut Medical Center, P.O. Box 11-0236, Riad El Solh 1107, 2020 Beirut, Lebanon. Tel: +961 1 350000; fax: +961 1 370814; e-mail: [email protected]