title: SPAR(klet) WARS: Erie's Duncan et al. vs. Cleveland's Hingson et al.
mesh_terms: D000776:Anesthesiology / Q000266:history* / Q000295:instrumentation*; D004349:Drug Packaging; D049673:History, 20th Century; D006801:Humans; D010102:Oxygen Inhalation Therapy / Q000266:history* / Q000295:instrumentation*