1. Department of Ophthalmology, Sinop Ayancık State Hospital, Sinop, Turkey
2. Department of Ophthalmology, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
3. Department of Medical Genetics, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
4. Department of Ophthalmology, ROP Screening, Treatment and Training Center, Zeynep Kamil Maternity and Children’s Disease Training and Research Hospital, Istanbul, Turkey