RT Journal Article SR Electronic T1 Spotting latent infection: the path to better tuberculosis control JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 916 OP 918 DO 10.1136/thorax.58.11.916 VO 58 IS 11 A1 A Lalvani YR 2003 UL http://thorax.bmj.com/content/58/11/916.abstract AB