title: Aspiration testing and epidural filters.
authors.forename: V K
authors.initials: VK
authors.lastname: Sinha
authors.forename: J
authors.initials: J
authors.lastname: Duggan
mesh_terms: D015360:Analgesia, Epidural / Q000295:instrumentation*; D000767:Anesthesia, Epidural / Q000295:instrumentation*; D005374:Filtration / Q000295:instrumentation; D006801:Humans; D013396:Suction / Q000295:instrumentation