Does the bevel orientation of spinal needles matter?
Defalque
R J
RJ
D000775:Anesthesia, Spinal / Q000009:adverse effects* / Q000295:instrumentation*; D003625:Data Collection; D006261:Headache / Q000209:etiology / Q000517:prevention & control; D006801:Humans; D019300:Medical Errors; D009339:Needles