RT Journal Article SR Electronic T1 Ethics and artificial nutrition towards the end of life JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 607 OP 610 DO 10.7861/clinmedicine.10-6-607 VO 10 IS 6 A1 Barry JM Jones YR 2010 UL http://www.rcpjournals.org/content/10/6/607.abstract