PT - JOURNAL ARTICLE AU - Bruce Culver TI - Defining airflow limitation and chronic obstructive pulmonary disease: the role of outcome studies AID - 10.1183/09031936.00042215 DP - 2015 Jul 01 TA - European Respiratory Journal PG - 8--10 VI - 46 IP - 1 4099 - http://erj.ersjournals.com/content/46/1/8.short 4100 - http://erj.ersjournals.com/content/46/1/8.full SO - Eur Respir J2015 Jul 01; 46