PT - JOURNAL ARTICLE AU - Joerg Mattes AU - Peter G Gibson TI - The early origins of COPD in severe asthma: the one thing that leads to another or the two things that come together? AID - 10.1136/thoraxjnl-2014-205401 DP - 2014 Sep 01 TA - Thorax PG - 789--790 VI - 69 IP - 9 4099 - http://thorax.bmj.com/content/69/9/789.short 4100 - http://thorax.bmj.com/content/69/9/789.full SO - Thorax2014 Sep 01; 69