title: Letter to the editor.
authors.forename: Mihnea
authors.initials: M
authors.lastname: Dumitrescu
authors.forename: Charles
authors.initials: C
authors.lastname: Aprill
mesh_terms: D002404:Catheterization / Q000009:adverse effects* / Q000592:standards*; D002574:Cervical Vertebrae / Q000000981:diagnostic imaging / Q000601:surgery*; D004388:Dura Mater / Q000000981:diagnostic imaging / Q000293:injuries; D006801:Humans; D007431:Intraoperative Complications / Q000209:etiology / Q000517:prevention & control*; D009407:Nerve Block / Q000009:adverse effects* / Q000295:instrumentation / Q000379:methods*; D011859:Radiography; D013126:Spinal Nerve Roots / Q000000981:diagnostic imaging / Q000601:surgery*; D013346:Subarachnoid Space / Q000000981:diagnostic imaging / Q000293:injuries