RT Journal Article SR Electronic T1 Fifty years of medical ethics: from the London Medical Group to the Institute of Medical Ethics JF Journal of Medical Ethics JO J Med Ethics FD BMJ Publishing Group Ltd and Institute of Medical Ethics SP 662 OP 666 DO 10.1136/medethics-2013-101812 VO 39 IS 11 A1 Edward Shotter A1 Margaret Lloyd A1 Roger Higgs A1 Kenneth Boyd YR 2013 UL http://jme.bmj.com/content/39/11/662.abstract AB