1. Clinical Microbiology Laboratory Baruch Padeh Medical Center, Poriya, affiliated with the Faculty of Medicine; Bar Ilan University; Galilee Israel
2. The Faculty of Medicine in the Galilee; Bar Ilan University; Zefat Israel
3. Pediatric Gastrointestinal Unit; Baruch Padeh Medical Center, Poriya, affiliated with the Faculty of Medicine; Bar Ilan University; Galilee Israel
4. Gastrointestinal Unit; Baruch Padeh Medical Center, Poriya, affiliated with the Faculty of Medicine; Bar Ilan University; Galilee Israel