title: Authors' reply.
authors.affiliation: Equine Department, Anaesthesiology Section, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland; Small Animal Medicine and Surgery Academic Programme, School of Veterinary Medicine, St George's University, Grenada, West Indies. kguerrero@sgu.edu.
authors.forename: Karin Kalchofner
authors.initials: KK
authors.lastname: Guerrero
authors.forename: Andrea
authors.initials: A
authors.lastname: Schwarz
authors.forename: Regula
authors.initials: R
authors.lastname: Bettschart-Wolfensberger
mesh_terms: D000758:Anesthesia / Q000662:veterinary*; D000777:Anesthetics; D019162:Anesthetics, Combined; D000818:Animals; D005260:Female; D007044:Hysterectomy / Q000662:veterinary*; D007649:Ketamine; D020926:Medetomidine; D010052:Ovariectomy / Q000662:veterinary*; D010149:Postoperative Pain / Q000662:veterinary*; D011277:Pregnanediones
chemical_list: D000777:Anesthetics; D019162:Anesthetics, Combined; D011277:Pregnanediones; D007649:Ketamine; D020926:Medetomidine