1. Department of Ophthalmology, Oslo University Hospital-Ullevål, Oslo, Norway
2. Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
3. Department of Ophthalmology, University of Split School of Medicine, Split, Croatia
4. Oslo Centre of Biostatistics and Epidemiology, Research Support Services, Oslo University Hospital, Oslo, Norway
5. Department of Ophthalmology, Vestre Viken Hospital, Drammen, Norway
6. Department of Neurosurgery, Oslo University Hospital–Rikshospitalet, Oslo, Norway