title: The authors respond.
authors: Robert
authors: R
authors: Meyer
authors: W E Morgan
authors: WE
authors: Morrow
authors: Larry
authors: L
authors: Stikeleather
authors: Darrel K
authors: DK
authors: Styles
mesh_terms: D000818:Animals; D002245:Carbon Dioxide; D004630:Emergencies / Q000662:veterinary*; D037901:Euthanasia, Animal / Q000379:methods*; D013553:Swine Diseases / Q000517:prevention & control*
chemical_list: D002245:Carbon Dioxide