SECTION I: SYMPOSIUM: PDF OnlyClassification of Spondyloisis and SpondylolisthesisWILTSE, LEON L. M.D.; NEWMAN, P. H. M.D.; MACNAB, IAN M.D. Author Information From Memorial Hospital Medical Center of Long Beach, California, and Earl and Loraine Miller Children's Hospital Medical Center, Long Beach, California. Clinical Orthopaedics and Related Research 117():p 23-29, June 1976. Free © Lippincott-Raven Publishers.