ผู้เขียน: Nigel Caulkett

Gary West, DVM, Dipl. ACZM, is an Executive Vice President of Animal Health and Collections at the Phoenix Zoo in Phoenix, Arizona, USA. Darryl Heard, B.Sc., B.V.M.S., Ph.D, Dipl. ACZM is an Associate Professor of Zoological Medicine at the University of Florida”s College of Veterinary Medicine in Gainesville, Florida, USA. Nigel Caulkett, DVM, MVet Sc., Dipl., ACVA is Department Head, Veterinary Clinical & Diagnostic Sciences, and Professor, Anaesthesiology, at the University of Calgary in Calgary, Alberta, Canada.