Central Nervous System Anomalies Associated with Meningomyelocele, Hydrocephalus, and the Arnold-Chiari Malformation: Reappraisal of Theories Regarding the Pathogenesis of Posterior Neural Tube Closure Defects

Abstract
Complete gross and microscopic neuropathological examinations of 25 children who died with meningomyelocele, the Arnold-Chiari malformation, and hydro