1. Department of Pediatrics; University of Medicine and Pharmacy; Tîrgu Mureș Romania
2. Department of Obstetrics and Gynecology; University of Medicine and Pharmacy; Tîrgu Mureș Romania
3. Neonatology Department; Clinical County Emergency Hospital; Sibiu Romania
4. Department of Neonatology; Clinical County Hospital; Brasov Romania
5. Department of Statistics and Informatics; University of Medicine and Pharmacy; Tîrgu Mureș Romania
6. Department of Pediatrics; University of Iowa; Iowa City Iowa USA