1. Department of Ophthalmology, Rio Hortega University Hospital, Valladolid, Spain
2. Department of Ophthalmology, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia
3. Department of Ophthalmology, Otorhinolaryngology and Head and Neck Surgery, School of Medicine of Ribeirão Preto–University of São Paulo, Brazil
4. Clinica de Oftalmología de Cali, Cali, Colombia
5. Department of Ophthalmology Faculdade de Medicina de Botucatu - UNESP, São Paulo, Brasil