1. Department of Pediatrics, Faculty of General Medicine, “Ovidius” University, 900470 Constanta, Romania
2. Pediatrics, County Clinical Emergency Hospital of Constanta, 900591 Constanta, Romania
3. Pediatrics, “Grigore T. Popa”, Department of Mother and Child Medicine, University of Medicine and Pharmacy, 700115 Iasi, Romania
4. Department 1 Preclinical, Faculty of General Medicine, “Ovidius” University, 900470 Constanta, Romania
5. Department of Infectious Diseases, Faculty of General Medicine, “Ovidius” University, 900470 Constanta, Romania