1. Department of Pediatrics, Division of Neonatology; Çukurova University; Adana Turkey
2. Neonatal Intensive Care Unit; Diyarbakır Children's Hospital; Diyarbakır Turkey
3. Department of Pediatrics, Division of Neonatology; Gaziantep University; Gaziantep Turkey
4. Department of Pediatrics, Division of Neonatology; Mersin University; Mersin Turkey
5. Neonatal Intensive Care Unit; Güney Adana Hospital; Adana Turkey
6. Department of Biostatistics; Çukurova University; Adana Turkey