1. Rotterdam Eye Hospital, Rotterdam, The Netherlands 2Department of Ophthalmology, Leiden University Medical Center, Leiden, The Netherlands
2. Department of Ophthalmology, University Medical Center Groningen, Groningen, The Netherlands 4W. J. Kolff Institute, Graduate School of Medical Sciences, University of Groningen, Groningen, The Netherlands
3. Rotterdam Eye Hospital, Rotterdam, The Netherlands
4. Department of Ophthalmology, VU University Medical Center, Amsterdam, The Netherlands
5. Department of Ophthalmology, University Medical Center Utrecht, Utrecht, The Netherlands
6. Department of Ophthalmology, University Medical Center Utrecht, Utrecht, The Netherlands 7Department of Ophthalmology, Erasmus University Medical Center, Rotterdam, The Netherlands