1. Ophthalmology Unit; Department of Small Animal Medicine and Surgery; Faculty of Agrarian and Veterinary Sciences; FCAV; UNESP; Jaboticabal SP Brazil
2. Anesthesiology Unit; Department of Small Animal Medicine and Animal Reproduction; Faculty of Agrarian and Veterinary Sciences; FCAV; UNESP; Jaboticabal SP Brazil
3. Department of Small Animal Medicine; Clinica Protectora de Animales; Bogota Colombia