RT Journal Article SR Electronic T1 Crossing Over and Delineating Disease JF Medical Humanities JO J Med Humanit FD BMJ Publishing Group Ltd and Institute of Medical Ethics SP 115 OP 116 DO 10.1136/jmh.2008.001115 VO 34 IS 2 A1 M Wallace YR 2008 UL http://mh.bmj.com/content/34/2/115.abstract AB