1. Department of Ophthalmology, Universitary Hospital Arnau de Vilanova, 25198 Lleida, Spain
2. IRB Lleida, 25198 Lleida, Spain
3. Department of Ophthalmology, “Lozano Blesa” University Clinic Hospital, Zaragoza, Spain
4. Instituto Aragonés de Ciencias de la Salud, Zaragoza, Spain
5. Department of Ophthalmology, Poznań City Hospital, Poznań, Poland