RT Journal Article SR Electronic T1 Novel device for sealing perforations following dural puncture JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 397 OP 397 DO 10.1136/rapm-2020-102423 VO 46 IS 5 A1 Alaa Abd-Elsayed YR 2021 UL http://rapm.bmj.com/content/46/5/397.abstract AB