RT Journal Article SR Electronic T1 Commentary 2 JF Journal of Medical Ethics JO J Med Ethics FD BMJ Publishing Group Ltd and Institute of Medical Ethics SP 13 OP 18 DO 10.1136/jme.7.1.13 VO 7 IS 1 A1 A G M Campbell A1 D J Cusine YR 1981 UL http://jme.bmj.com/content/7/1/13.abstract AB