1. Department of Ophthalmology, Complejo Hospitalario Universitario de Santiago de Compostela and University of Santiago de Compostela, Santiago de Compostela, Spain. Instituto Tecnológico de Oftalmología, Santiago de Compostela, Spain.
2. Department of Ophthalmology, Complejo Hospitalario Universitario de Santiago de Compostela and University of Santiago de Compostela, Santiago de Compostela, Spain.
3. Department of Financial Economics and Accounting, University of Santiago de Compostela, Santiago de Compostela, Spain.
4. Department of Ophthalmology, Complejo Hospitalario Universitario de Santiago de Compostela and University of Santiago de Compostela, Santiago de Compostela, Spain. Department of Physiology, School of Medicine, University of Santiago de Compostela, Santiago de Compostela, Spain.