1. Augenarzt-Praxisgemeinschaft Gutblick AG, Pfäffikon, Switzerland
2. Department of Ophthalmology, Northwestern University, Chicago, IL, USA
3. Department of Ophthalmology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
4. Eyegnos Consulting, Hinterkappelen, Switzerland