1. Department of Otolaryngology Head and Neck Surgery, Rabin Medical Center, Petah Tikva, Israel
2. Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
3. The Rina Zaizov Division of Pediatric Hematology-Oncology, Schneider Children's Medical Center, Petah Tikva, Israel
4. Pediatric Infectious Diseases Unit, Schneider Children's Medical Center, Petah Tikva, Israel
5. Department of Otolaryngology, Schneider Children's Medical Center, Petah Tikva, Israel