1. Department of Ophthalmology Region Västra Götaland Sahlgrenska University Hospital Mölndal Sweden
2. Department of Clinical Neuroscience Institute of Neuroscience and Physiology The Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
3. Copenhagen Eye and Strabismus Clinic Copenhagen Denmark
4. Division of Ophthalmology and Vision Department of Clinical Neuroscience Karolinska Institute St Erik Eye Hospital Stockholm Sweden
5. Department of Clinical Sciences Ophthalmology Lund University Lund Sweden