PT - JOURNAL ARTICLE AU - Douglas W Mapel TI - Improved survival in COPD: reasons for hope AID - 10.1136/thx.2009.128330 DP - 2010 Apr 01 TA - Thorax PG - 284--285 VI - 65 IP - 4 4099 - http://thorax.bmj.com/content/65/4/284.short 4100 - http://thorax.bmj.com/content/65/4/284.full SO - Thorax2010 Apr 01; 65