RT Journal Article SR Electronic T1 Opioid tapering following the transfer of care of outpatient chronic non-cancer pain patients on high-dose opioid therapy JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 535 OP 536 DO 10.1136/rapm-2020-102191 VO 46 IS 6 A1 Chapman, Kenneth B A1 Pas, Martijn M A1 Akuamoah, Latrice A1 Deer, Timothy R A1 van Helmond, Noud YR 2021 UL http://rapm.bmj.com/content/46/6/535.abstract AB