1. Department of Ophthalmology, University Clinic Hospital Lozano Blesa, Avenida San Juan Bosco 15, 50009 Zaragoza, Spain
2. Aragon Institute of Health Research (IIS Aragón), Avenida San Juan Bosco 13, 50009 Zaragoza, Spain
3. Department of Ophthalmology, University Hospital Arnau de Vilanova, Avenida Rovira Roure 80, 25198 Lleida, Spain
4. IRB Lleida, Avenida Rovira Roure 80, 25198 Lleida, Spain
5. Department of Ophthalmology, Poznan City Hospital, Ulica Szwajcarska 3, 61-285 Poznan, Poland
6. Department of Ophthalmology, University of Warmia and Mazury, 10-982 Olsztyn, Poland