1. “St. Mary” Children’s Emergency Hospital, Department of Pediatric Surgery, Iasi, Romania + “Gr. T. Popa” University of Medicine and Pharmacy, Iasi, Romania
2. “St. Mary” Children’s Emergency Hospital, ENT Department, Iasi, Romania
3. “St. Mary” Children’s Emergency Hospital, Pediatrics Department, Iasi, Romania + “Gr. T. Popa” University of Medicine and Pharmacy, Iasi, Romania
4. “Alexandru Ioan Cuza” University, Iasi Romania + “Sf. Spiridon” University Emergency Clinical Hospital, Iasi, Romania