1. Institute of Biomedical and Oral Research (IBOR), Faculty of Dental Medicine, Hebrew University of Jerusalem, Jerusalem, Israel.
2. Department of Military Medicine, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel.
3. Bar Ilan University, Ramat Gan, Israel.
4. Peres Academic Center, Rehovot, Israel.
5. Department of Clinical Microbiology and Infectious Diseases, Jerusalem, and the Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel.