title: What makes a flight surgeon? The pre-world war I historical perspective.
authors.forename: Douglas S
authors.initials: DS
authors.lastname: Files
mesh_terms: D000337:Aerospace Medicine / Q000193:education / Q000266:history*; D013502:General Surgery / Q000193:education / Q000266:history*; D049673:History, 20th Century; D006801:Humans; D008889:Military Personnel / Q000193:education / Q000266:history*; D014481:United States