1. Service of Ophthalmology - Spain
2. Service of Microbiology, Complejo Hospitalario Universitario de Santiago de Compostela - Spain
3. Service of Maxilofacial Surgery and Department of Surgery, Complejo Hospitalario Universitario de Santiago de Compostela, University of Santiago de Compostela - Spain
4. Department of Physiology, School of Medicine, University of Santiago de Compostela - Spain