PT - JOURNAL ARTICLE ED - , TI - Corrections AID - 10.1136/thx.2003.008912corr1 DP - 2004 Jun 01 TA - Thorax PG - 543--543 VI - 59 IP - 6 4099 - http://thorax.bmj.com/content/59/6/543.2.short 4100 - http://thorax.bmj.com/content/59/6/543.2.full SO - Thorax2004 Jun 01; 59