RT Journal Article SR Electronic T1 Commentary JF Journal of Medical Ethics JO J Med Ethics FD BMJ Publishing Group Ltd and Institute of Medical Ethics SP 69 OP 70 DO 10.1136/jme.4.2.69 VO 4 IS 2 A1 John Bancroft YR 1978 UL http://jme.bmj.com/content/4/2/69.abstract AB