PT - JOURNAL ARTICLE AU - Culver, Bruce H. TI - Assessment of severity and prognosis in COPD: moving beyond percent of predicted AID - 10.1183/13993003.01005-2018 DP - 2018 Aug 01 TA - European Respiratory Journal PG - 1801005 VI - 52 IP - 2 4099 - http://erj.ersjournals.com/content/52/2/1801005.short 4100 - http://erj.ersjournals.com/content/52/2/1801005.full SO - Eur Respir J2018 Aug 01; 52