1 School of Medicine, Trinity College Dublin, The University of Dublin, Dublin 2, Ireland. Electronic address: balyons@tcd.ie.
2 Department of Anaesthesia and Critical Care Medicine, Our Lady's Children's Hospital, Crumlin, Dublin 12, Ireland.
3 Department of Social Work and Social Care, University of Birmingham, Birmingham, UK; Medical Humanities and Philosophy, University of Exeter, Exeter, UK.