1. Animal Care Services, King Edward Memorial Hospital, Subiaco, Western Australia, Australia. gabrielle.musk@uwa.edu.au
2. School of Medicine and Pharmacology, King Edward Memorial Hospital, Department of Anaesthesia and Pain Medicine, King Edward Memorial Hospital, Subiaco, Western Australia, Australia
3. College of Veterinary Medicine, School of Veterinary and Life Sciences, Murdoch University, Murdoch, Western Australia, Australia
4. Division of Obstetrics and Gynaecology, University of Western Australia, Perth, Australia