title: PM&R: where we have been, where we are heading.
authors.forename: Ernest W
authors.initials: EW
authors.lastname: Johnson
mesh_terms: D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D010506:Periodicals as Topic; D010810:Physical and Rehabilitation Medicine / Q000266:history*; D012046:Rehabilitation / Q000266:history*