1. Department of Internal Medicine, Shaare Zedek Medical Center, Jerusalem, Israel;
2. Department of Pediatric Infectious Diseases, Shaare Zedek Medical Center, Faculty of Medicine, Hebrew University of Jerusalem Hadassah Medical School, Jerusalem, Israel;
3. Anesthesiology and Obstetric Anesthesiology Unit, Shaare Zedek Medical Center, Jerusalem, Israel;
4. Department of Obstetrics and Gynecology, Shaare Zedek Medical Center, Jerusalem, Israel;
5. Infectious Disease Unit, Shaare Zedek Medical Center, Jerusalem, Israel