title: Regional variation and spine care: an historical perspective.
authors.affiliation: Department of Orthopaedic Surgery, William Beaumont Army Medical Center, Texas Tech University Health Sciences Center, El Paso, TX, USA.
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Schoenfeld
authors.forename: Bradley K
authors.initials: BK
authors.lastname: Weiner
authors.forename: Harvey E
authors.initials: HE
authors.lastname: Smith
mesh_terms: D003695:Delivery of Health Care / Q000266:history* / Q000379:methods / Q000639:trends; D049668:History, 15th Century; D049669:History, 16th Century; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D049674:History, 21st Century; D049690:History, Ancient; D049691:History, Medieval; D006801:Humans; D019637:Orthopedic Procedures / Q000266:history* / Q000379:methods / Q000639:trends; D010818:Practice Patterns, Physicians' / Q000266:history* / Q000639:trends; D013122:Spinal Diseases / Q000601:surgery; D013131:Spine / Q000601:surgery*