RT Journal Article SR Electronic T1 The cannabis conundrum JF European Journal of Hospital Pharmacy JO Eur J Hosp Pharm FD British Medical Journal Publishing Group SP 1 OP 1 DO 10.1136/ejhpharm-2019-002154 VO 27 IS 1 A1 Philip Wiffen YR 2020 UL http://ejhp.bmj.com/content/27/1/1.abstract AB