RT Journal Article SR Electronic T1 A comparison between interferon gamma release assays and the tuberculin skin test in the contact tracing of patients with chronic kidney disease JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 729 OP 730 DO 10.1136/thx.2010.149088 VO 66 IS 8 A1 D W Connell A1 A Singanayagam A1 R Charif A1 P M George A1 P L Molyneaux A1 C McCrudden A1 M Magtoto A1 E Harden A1 S L Seneviratne A1 N D Duncan A1 O M Kon YR 2011 UL http://thorax.bmj.com/content/66/8/729.abstract AB