RT Journal Article SR Electronic T1 Retraction JF BMJ Supportive & Palliative Care JO BMJ Support Palliat Care FD British Medical Journal Publishing Group SP 211 OP 211 DO 10.1136/bmjspcare-2013-000491.157ret VO 4 IS 2 YR 2014 UL http://spcare.bmj.com/content/4/2/211.1.abstract AB