1. Division of Neonatology, Department of Pediatrics, Konya Education and Research Hospital, Konya, Turkey,
2. Department of Neonatology, Meram Medical Faculty, Necmettin Erbakan University, Konya, Turkey,
3. Department of Pediatri, Selcuk University, Selçuklu Medical Faculty, Konya, Turkey, and
4. Department of Biochemistry, Meram Medical Faculty, Necmettin Erbakan University, Konya, Turkey