1. Department of Clinical Sciences, Ophthalmology, Umeå University, Umeå, Sweden
2. Department of Clinical Neuroscience, Division of Eye and Vision, St. Erik Eye Hospital, Karolinska Institutet, Stockholm, Sweden
3. Department of Ophthalmology, University of Basel, Basel, Switzerland
4. Wallenberg Centre for Molecular Medicine, Umeå University, Umeå, Sweden
5. Department of Ophthalmology, University of Iceland, Iceland