1. Fernández-Vega University Institute, Foundation of Ophthalmological Investigation, University of Oviedo, Oviedo, Spain
2. Department of Neurodegenerative Eye Disease, Fernández-Vega Ophthalmological Institute, Oviedo, Spain
3. Laboratory of Human Molecular Genetics, Faculty of Medicine/Institute of Investigation in Neurological Disabilities (IDINE), University of Castilla-La Mancha, Albacete, Spain
4. Department of Ophthalmology and Visual Science, Yale University School of Medicine, New Haven, Connecticut, USA