title: Was there a Danish precursor to the Fisher & Paykel Humidifer?
authors.forename: R V
authors.initials: RV
authors.lastname: Trubuhovich
mesh_terms: D003718:Denmark; D049673:History, 20th Century; D006801:Humans; D011051:Poliomyelitis / Q000266:history / Q000628:therapy; D011175:Positive-Pressure Respiration; D012122:Ventilators, Mechanical / Q000266:history*