1. Department of Pediatrics, Faculty of General Medicine, ‘Ovidius’ University of Constanta, 900470 Constanta, Romania
2. Department of Infectious Diseases, Faculty of General Medicine, ‘Ovidius’ University of Constanta, 900470 Constanta, Romania
3. Department of Neurology, Faculty of General Medicine, ‘Ovidius’ University of Constanta, 900470 Constanta, Romania
4. Department of Neurology, ‘Victor Babes’ University of Medicine and Pharmacy, 300041 Timisoara, Romania