PT - JOURNAL ARTICLE AU - Marjan Kerkhof AU - Elizabeth V. Hillyer AU - David B. Price ED - , TI - The effect of smoking on exacerbation risk in eosinophilic patients with COPD AID - 10.1183/13993003.02086-2017 DP - 2017 Dec 01 TA - European Respiratory Journal PG - 1702086 VI - 50 IP - 6 4099 - http://erj.ersjournals.com/content/50/6/1702086.short 4100 - http://erj.ersjournals.com/content/50/6/1702086.full SO - Eur Respir J2017 Dec 01; 50