Medical School, Hebrew University, Jerusalem, Israel. Imaging division, Radiology department, Sourasky medical center-Ichilov, Tel Aviv, Israel. Braun School of Public Health and Community Medicine, Hebrew University, Jerusalem, Israel. Internal medicine ward B, Hadassah Hebrew University Medical Center, Jerusalem, Israel. Department of Allergy, Immunology and HIV, Kaplan Medical Center, Rehovot, Israel. Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel. Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel. hilaelinav@gmail.com. Hadassah AIDS Center, Department of Microbiology and Infectious Diseases, Hadassah Hebrew University Medical Center, Jerusalem, Israel. hilaelinav@gmail.com.