1. Department of Clinical and Experimental Medicine, Faculty of Health Sciences, Linköping University, Linköping, Sweden
2. Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway 3Schepens Eye Research Institute, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, Massachusetts
3. Synslaser Kirurgi AS, Oslo, Norway
4. Department of Ophthalmology, Innland Hospital, Elverum, Norway