title: Space medicine roots: a historical perspective for the current direction.
authors.affiliation: NASA Johnson Space Center, Houston, TX, USA.
authors.forename: Sam Lee
authors.initials: SL
authors.lastname: Pool
authors.forename: Jeffrey R
authors.initials: JR
authors.lastname: Davis
mesh_terms: D000337:Aerospace Medicine / Q000266:history*; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D013026:Space Flight / Q000266:history*