1. Mekelle University College of Health Sciences; Mekelle Tigray Ethiopia
2. Clinical Microbiology and Infectious Diseases Department; Hadassah University Medical Center; Jerusalem Israel
3. Internal Medicine Division; Hadassah University Medical Center; Jerusalem Israel
4. Department of Tuberculosis and AIDS; Ministry of Health; Jerusalem Israel
5. The Allergy, Clinical Immunology and AIDS Unit; Kaplan Medical Center; Rehovot Israel
6. Institute of Allergy, Immunology and AIDS Rambam Medical Center; Haifa Israel
7. Infectious Diseases Unit; Meir Medical Center; Kfar Saba Israel
8. Crusaid Kobler AIDS Center; Tel-Aviv Sourasky Medical Center; Tel-Aviv Israel
9. Division of Infectious Diseases; Department of Medicine; Yale University School of Medicine; New Haven CT USA
10. Division of Infectious Diseases; Barzilai Medical Center; Ashkelon Israel