title: In reply.
authors.affiliation: Department of Anaesthetics, Nottingham University Hospitals NHS Trust, Nottingham, UK. Electronic address: david.bogod@me.com.
authors.forename: D G
authors.initials: DG
authors.lastname: Bogod
mesh_terms: D000773:Anesthesia, Obstetrical / Q000379:methods*; D000775:Anesthesia, Spinal / Q000379:methods*; D005260:Female; D006801:Humans; D008159:Lumbar Vertebrae / Q000033:anatomy & histology*; D011247:Pregnancy