1. Department of Ophthalmology; Erasmus University Medical Centre; Rotterdam the Netherlands
2. Department of Ophthalmology; Albert Schweitzer Hospital; Dordrecht the Netherlands
3. Department of Epidemiology; Erasmus University Medical Centre; Rotterdam the Netherlands
4. Department of Psychiatry; section of Medical Psychology and Psychotherapy; Erasmus University Medical Centre; Rotterdam the Netherlands
5. Department of Radiotherapy; Radiotherapy group; Deventer the Netherlands
6. Department of Ophthalmology; Leiden University Medical Centre; Leiden the Netherlands
7. The Rotterdam Eye Hospital; Rotterdam the Netherlands
8. Department of Clinical Genetics; Erasmus University Medical Centre; Rotterdam the Netherlands