1. Employee Health Unit, Department of Family Medicine, American University of Beirut, Beirut 1107 2020, Lebanon
2. Department of Family Medicine, American University of Beirut Medical Center, Beirut 1107 2020, Lebanon
3. Infection Prevention and Control Program, American University of Beirut Medical Center, Beirut 1107 2020, Lebanon
4. Faculty of Medicine, American University of Beirut, Beirut 1107 2020, Lebanon
5. Hariri School of Nursing, American University of Beirut, Beirut 1107 2020, Lebanon