PT - JOURNAL ARTICLE AU - Sundari Ampikaipakan TI - Combination treatment may help patients with COPD, but does not improve mortality DP - 2007 Jul 01 TA - Thorax PG - 587--587 VI - 62 IP - 7 4099 - http://thorax.bmj.com/content/62/7/587.short 4100 - http://thorax.bmj.com/content/62/7/587.full SO - Thorax2007 Jul 01; 62