RT Journal Article SR Electronic T1 Weaning down opioids in the inherited patients on high-dose opioids JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP rapm-2020-102375 DO 10.1136/rapm-2020-102375 A1 Alaa Abd-Elsayed A1 Eric S Schwenk YR 2021 UL http://rapm.bmj.com/content/early/2021/01/22/rapm-2020-102375.abstract AB