1. Dr. Rolf M. Schwiete Center for Limbal Stem Cell and Aniridia Research, Homburg (Saar), Germany
2. Department of Ophthalmology, Saarland University Medical Center, Homburg (Saar), Germany
3. Department of Human Genetics and Center for Human and Molecular Biology, Saarland University, Homburg (Saar), Germany
4. Center for Refractive Surgery, Eye Department at St. Francis Hospital, Muenster, Germany
5. Vision Center for Eye Laser and Eye Surgery, Graz, Austria
6. Department of Ophthalmology, Semmelweis University, Budapest, Hungary