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