RT Journal Article SR Electronic T1 Elementary Economic Evaluation in Health Care. 2nd edition. JF Quality in Health Care JO Qual Health Care FD BMJ Publishing Group Ltd SP 264 OP 264 DO 10.1136/qhc.9.4.264-b VO 9 IS 4 A1 Trevor A Sheldon YR 2000 UL http://qualitysafety.bmj.com/content/9/4/264.3.abstract AB