PT - JOURNAL ARTICLE AU - Joan B. Soriano AU - Nicholas S. Hopkinson TI - Sing out for COPD! AID - 10.1183/13993003.02961-2021 DP - 2022 May 01 TA - European Respiratory Journal PG - 2102961 VI - 59 IP - 5 4099 - http://erj.ersjournals.com/content/59/5/2102961.short 4100 - http://erj.ersjournals.com/content/59/5/2102961.full SO - Eur Respir J2022 May 01; 59