RT Journal Article SR Electronic T1 Uncertainty, error and informed consent to challenge trials of COVID-19 vaccines: response to Steel et al JF Journal of Medical Ethics JO J Med Ethics FD BMJ Publishing Group Ltd and Institute of Medical Ethics SP 813 OP 814 DO 10.1136/medethics-2020-106793 VO 46 IS 12 A1 Arnon Keren A1 Ori Lev YR 2020 UL http://jme.bmj.com/content/46/12/813.abstract AB Markup server — Error Error There was a problem handling your request. Please try again in a few minutes, or contact us if you continue to experience this problem.