1. Department of Clinical Biochemistry and Clinical Genetics, Hospital Universitario Miguel Servet, Zaragoza, Spain
2. Department of Ophthalmology, Hospital Universitario Miguel Servet, Zaragoza, Spain
3. Miguel Servet Ophthalmology Research Group (GIMSO), Aragón Institute for Health Research (Iis-aragón), Zaragoza, Spain
4. Department of Clinical Biochemistry, Hospital Universitario San Jorge, Huesca, Spain