RT Journal Article SR Electronic T1 Saviour siblings: no avoiding the hard questions JF Journal of Medical Ethics JO J Med Ethics FD BMJ Publishing Group Ltd and Institute of Medical Ethics SP 931 OP 932 DO 10.1136/medethics-2014-102605 VO 41 IS 12 A1 Colin Gavaghan YR 2015 UL http://jme.bmj.com/content/41/12/931.abstract AB