RT Journal Article SR Electronic T1 Cannabinoids and pain medicine: what could possibly go wrong? JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 485 OP 485 DO 10.1136/rapm-2020-101648 VO 45 IS 7 A1 Brian D Sites YR 2020 UL http://rapm.bmj.com/content/45/7/485.abstract AB