RT Journal Article SR Electronic T1 Lung cancer CT screening is cost-effective but implementation matters JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 78 OP 78 DO 10.1136/ebmed-2014-110137 VO 20 IS 2 A1 Bernardo Goulart YR 2015 UL http://ebm.bmj.com/content/20/2/78.abstract AB