RT Journal Article SR Electronic T1 Challenges of delabelling penicillin allergy JF Drug and Therapeutics Bulletin JO Drug Ther Bull FD BMJ Publishing Group Ltd SP dtb-2021-000019 DO 10.1136/dtb.2021.000019 A1 Michael Wilcock A1 Neil Powell YR 2021 UL http://dtb.bmj.com/content/early/2021/09/23/dtb.2021.000019.abstract AB