1. Faculty of Health Sciences, Ben Gurion University of the Negev, Beer Sheva, Israel;
2. Neonatal Department, Soroka University Medical Center, Beer Sheva, Israel;
3. Pediatric Infectious Diseases Unit, Soroka University Medical Center, Beer Sheva, Israel;
4. Clinical Research Center, Soroka University Medical Center, Beer Sheva, Israel;
5. College of Health Sciences and Professions, Ohio University, Athens, OH, USA