1. Faculty of Medicine, Lucian Blaga University Sibiu, 550169 Sibiu, Romania
2. Clinical County Emergency Hospital Sibiu, 550245 Sibiu, Romania
3. Department of Neonatology, George Emil Palade University of Medicine, Pharmacy, Science, and Technology, 540142 Targu Mures, Romania
4. Municipal Hospital, 551026 Mediaș, Romania
5. Department of Neonatology, Clinical County Emergency Hospital Bihor, 410167 Oradea, Romania
6. Doctoral School, Poznan University of Medical Sciences, 60-535 Poznan, Poland