1. 2nd Department of Ophthalmology, School of Medicine, Faculty of Health Sciences Aristotle University of Thessaloniki Thessaloniki Greece
2. Department of Hygiene, Social‐Preventive Medicine & Medical Statistics, School of Medicine, Faculty of Health Sciences Aristotle University of Thessaloniki Thessaloniki Greece
3. 2nd Department of Neonatology, School of Medicine, Faculty of Health Sciences Aristotle University of Thessaloniki Thessaloniki Greece
4. The Sahlgrenska Centre for Pediatric Ophthalmology Research, Department of Clinical Neuroscience Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg Gothenburg Sweden