RT Journal Article SR Electronic T1 Vaccine mandates need a clear rationale to identify which exemptions are appropriate JF Journal of Medical Ethics JO J Med Ethics FD BMJ Publishing Group Ltd and Institute of Medical Ethics SP medethics-2022-108353 DO 10.1136/medethics-2022-108353 A1 Bridget Williams YR 2022 UL http://jme.bmj.com/content/early/2022/05/11/medethics-2022-108353.abstract AB