1. Schepens Eye Research Institute, Massachusetts Eye and Ear Infirmary, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, United States
2. Department of Ophthalmology, The Second Hospital of Shanxi Medical University, Taiyuan, China
3. Faculty of Medicine, University of Oslo, Oslo, Norway
4. Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway
5. Department of Plastic and Reconstructive Surgery, Oslo University Hospital, Oslo, Norway