RT Journal Article SR Electronic T1 Review: heterogeneous studies show that nucleic acid amplification tests accurately rule in but do not rule out TB JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 121 OP 121 DO 10.1136/ebm.12.4.121 VO 12 IS 4 YR 2007 UL http://ebm.bmj.com/content/12/4/121.abstract AB