RT Journal Article SR Electronic T1 BCG re-vaccination JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 741 OP 742 DO 10.1136/thx.56.9.741 VO 56 IS 9 A1 P GRIME YR 2001 UL http://thorax.bmj.com/content/56/9/741.abstract AB