1. Department of Ophthalmology; Guadalajara University Hospital; Guadalajara Spain
2. Department of Ophthalmology; Príncipe de Asturias University Hospital; Alcalá de Henares Madrid Spain
3. Department of Surgery, Medical and Social Sciences; University of Alcalá; Alcalá de Henares Madrid Spain
4. Department of Medicine; Príncipe de Asturias University Hospital; Alcalá de Henares Madrid Spain