PT - JOURNAL ARTICLE AU - Claudia C. Dobler TI - The IMPACT of triple <em>versus</em> dual single-inhaler therapy on exacerbations of COPD AID - 10.1183/20734735.026418 DP - 2018 Dec 01 TA - Breathe PG - 333--335 VI - 14 IP - 4 4099 - http://breathe.ersjournals.com/content/14/4/333.short 4100 - http://breathe.ersjournals.com/content/14/4/333.full SO - Breathe2018 Dec 01; 14