1. Department of Ophthalmology, CHU Saint-Pierre, Université Libre de Bruxelles (ULB), Brussels, Belgium
2. Department of Ophthalmology, CHU Brugmann, Université Libre de Bruxelles (ULB), Brussels, Belgium
3. Department of Medical Microbiology, University Medical Center Utrecht, Utrecht, The Netherlands
4. Department of Ophthalmology, University Medical Center Utrecht, Utrecht, The Netherlands