RT Journal Article SR Electronic T1 Covid-19 vaccination—we need more than the ‘mum test’ JF Drug and Therapeutics Bulletin JO Drug Ther Bull FD BMJ Publishing Group Ltd SP 2 OP 2 DO 10.1136/dtb.2020.000071 VO 59 IS 1 A1 David Phizackerley YR 2021 UL http://dtb.bmj.com/content/59/1/2.abstract AB