1. Faculty of Medicine, “Lucian Blaga” University, 550024 Sibiu, Romania
2. Mathematics and Informatics Department, Faculty of Sciences, Research Center in Informatics and Information Technology, “Lucian Blaga” University, 550024 Sibiu, Romania
3. Research Team, Pediatric Clinical Hospital Sibiu, 550166 Sibiu, Romania
4. Doctoral School of Medicine, University of Oradea, 410087 Oradea, Romania