RT Journal Article SR Electronic T1 Strengthening the ethical distinction between euthanasia, palliative opioid use and palliative sedation JF Journal of Medical Ethics JO J Med Ethics FD BMJ Publishing Group Ltd and Institute of Medical Ethics SP medethics-2019-105519 DO 10.1136/medethics-2019-105519 A1 Xavier Symons YR 2019 UL http://jme.bmj.com/content/early/2019/06/20/medethics-2019-105519.abstract AB