RT Journal Article SR Electronic T1 'Section 47'. JF Journal of Medical Ethics JO J Med Ethics FD BMJ Publishing Group Ltd and Institute of Medical Ethics SP 146 OP 149 DO 10.1136/jme.7.3.146 VO 7 IS 3 A1 J A Gray YR 1981 UL http://jme.bmj.com/content/7/3/146.abstract AB