title: Misalignment of the spinal needle during the spinal epidural combined anesthesia.
authors.forename: I
authors.initials: I
authors.lastname: Pedraza
authors.forename: M I
authors.initials: MI
authors.lastname: Riobó
authors.forename: J D
authors.initials: JD
authors.lastname: Diz
authors.forename: J
authors.initials: J
authors.lastname: Alvarez
mesh_terms: D000767:Anesthesia, Epidural / Q000009:adverse effects / Q000295:instrumentation / Q000379:methods*; D000775:Anesthesia, Spinal / Q000009:adverse effects / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D009339:Needles / Q000009:adverse effects*