title: Spina bifida, somitic count and carnegie stage twelve.
authors.forename: R
authors.initials: R
authors.lastname: O'Rahilly
authors.forename: F
authors.initials: F
authors.lastname: Müller
mesh_terms: D006801:Humans; D019170:Somites / Q000145:classification*; D016135:Spinal Dysraphism / Q000145:classification* / Q000196:embryology*