1. Department of Veterinary Surgery and Anesthesiology; Faculty of Veterinary Medicine and Animal Science; Univ Estadual Paulista, UNESP; Botucatu SP Brazil
2. Department of Anesthesiology; Faculty of Medicine; Univ Estadual Paulista, UNESP; Botucatu SP Brazil
3. Taylor Monroe; Ely Cambridgeshire UK
4. Department of Veterinary Hygiene and Public Health; Faculty of Veterinary Medicine and Animal Science; Univ Estadual Paulista, UNESP; Botucatu SP Brazil