Fifty years of respiratory therapy.
D049673:History, 20th Century; D006748:Hospital Departments / Q000266:history*; D006801:Humans; D009518:New York; D010102:Oxygen Inhalation Therapy / Q000266:history*; D012138:Respiratory Therapy / Q000193:education / Q000266:history*; D012139:Respiratory Therapy Department, Hospital / Q000266:history*; D012952:Societies / Q000266:history; D014481:United States