1. Department of Ophthalmology, Biocruces Bizkaia Health Research Institute, Cruces University Hospital, University of the Basque Country, Barakaldo, Spain
2. Department of Ophthalmology, Clinic Hospital, Barcelona, Spain
3. Department of Biostatistics, BioCruces Health Research Institute, Bilbao, Spain
4. Department of Microbiology, Cruces University Hospital, Bilbao, Spain
5. Department of Retina, Instituto Oftalmológico Bilbao, Bilbao, Spain