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 57 OP 58 DO 10.1136/medethics-2019-105519 VO 46 IS 1 A1 Xavier Symons YR 2020 UL http://jme.bmj.com/content/46/1/57.abstract AB