title: Variations in shape and size of the lumbar spinal canal.
authors.forename: R W
authors.initials: RW
authors.lastname: Porter
mesh_terms: D049690:History, Ancient; D049692:History, Early Modern 1451-1600; D049691:History, Medieval; D049711:History, Modern 1601-; D010164:Paleopathology / Q000266:history*