1. Department of Ophthalmology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
2. Department of Children’s Rheumatology and Immunology, Beatrix Children’s Hospital, Groningen, RB, The Netherlands
3. W.J. Kolff Institute, Graduate School of Medical Sciences, University of Groningen, Groningen, AV, The Netherlands
4. Center of Rehabilitation, University of Groningen, University Medical Center Groningen, Groningen, Netherlands