1. Porto Alegre Health Sciences Federal University, Brazil
2. Santa Casa de Misericordia de Porto Alegre, Brazil
3. Santa Casa de Misericordia de Porto Alegre Ophthalmology Service, Brazil
4. Rio Grande do Sul Federal University, Brazil; Rio Grande do Sul Pontifical Catholic University; Porto Alegre Health Sciences Federal University
5. Porto Alegre Health Sciences Federal University, Brazil; Santa Casa de Misericordia de Porto Alegre