RT Journal Article SR Electronic T1 Presumed consent or contracting out. JF Journal of Medical Ethics JO J Med Ethics FD BMJ Publishing Group Ltd and Institute of Medical Ethics SP 365 OP 366 DO 10.1136/jme.25.5.365 VO 25 IS 5 A1 C A Erin A1 J Harris YR 1999 UL http://jme.bmj.com/content/25/5/365.abstract AB