29-gauge spinal needles.
Lyons
G
G
Macdonald
R
R
D000773:Anesthesia, Obstetrical / Q000009:adverse effects* / Q000295:instrumentation; D000775:Anesthesia, Spinal / Q000009:adverse effects* / Q000295:instrumentation; D001769:Blood; D004388:Dura Mater / Q000293:injuries; D005260:Female; D006801:Humans; D009339:Needles; D011247:Pregnancy