1. Department of Neonatology, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania;
2. Department of Neonatology, Gynecology Clinic, Emergency County Hospital, Cluj-Napoca, Romania;
3. Department of Medical Biochemistry, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania;
4. Department of Medical Informatics and Biostatistics, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania