1. 1Departament of Microbiology, University Hospital Marqués de Valdecilla - IDIVAL, Santander, Spain
2. 2Department of Infectious Diseases, University Hospital Marqués de Valdecilla, Santander, Spain
3. 3Department of Ophthalmology, University Hospital Marqués de Valdecilla, Santander, Spain
4. 4Department of Medicine and Psychiatry, University of Cantabria, Santander, Spain
5. 5Department of Molecular Biology, University of Cantabria, Santander, Spain