1. Department of Ophthalmology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
2. Institute of Medical Molecular Genetics, University of Zurich, Schlieren, Switzerland
3. Department of Ophthalmology, University Hospital Basel, Basel, Switzerland
4. Institute of Medical Genetics, University of Zurich, Zurich, Switzerland
5. Zurich Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
6. Neuroscience Center Zurich, University and ETH Zurich, Zurich, Switzerland