1. Ophthalmology Department, Hospital Clínico Universitario de Valladolid (HCUV), Valladolid, Spain
2. Ophthalmology Department, Hospital Universitario Río Hortega, Valladolid, Spain
3. Ophthalmology Department, Hospital Universitario Ramon y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, Spain
4. IMO Grupo Miranza, Madrid, Spain
5. Ophthalmology Department of Medical School, State University of Sao Paulo (UNESP), São Paulo, Brazil