title: Vanishing calibration marks on a spinal catheter.
authors.forename: S I
authors.initials: SI
authors.lastname: Schmidt
authors.forename: S S
authors.initials: SS
authors.lastname: Moorthy
authors.forename: S F
authors.initials: SF
authors.lastname: Dierdorf
authors.forename: J B
authors.initials: JB
authors.lastname: Latham
mesh_terms: D000775:Anesthesia, Spinal; D002404:Catheterization / Q000295:instrumentation*; D002408:Catheters, Indwelling; D004868:Equipment Failure; D006801:Humans