title: Block of epidural needle by blood clots.
authors.forename: E T
authors.initials: ET
authors.lastname: Lim
authors.forename: T S
authors.initials: TS
authors.lastname: Teh
authors.forename: Y H
authors.initials: YH
authors.lastname: Li
mesh_terms: D015360:Analgesia, Epidural; D016362:Analgesia, Obstetrical; D001777:Blood Coagulation; D005260:Female; D006801:Humans; D009339:Needles; D011247:Pregnancy