“…We have described the full OM3 approach to M&M rounds in a previous publication 6. In brief (box 1), key features of the OM3 include guidelines on appropriate case selection (a case must have an adverse event, preventability and lessons to be learnt), structured case analysis to specifically identify cognitive biases and system issues, discussion of possible action items, creation and dissemination of the summaries of each discussion, development of explicit administrative pathways to action on identified issues and encouragement of interprofessional and multidisciplinary involvement.…”