1. Ophthalmology Departement, HFR, Hôpital Cantonal, Fribourg, Switzerland
2. Department of Ophthalmology, University of Lausanne, Jules-Gonin Eye Hospital, Lausanne, Switzerland
3. Department of BioMedical Research, University of Bern, Bern, Switzerland
4. Division of Human Genetics, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
5. Department of Ophthalmology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland