PT - JOURNAL ARTICLE AU - Milo A. Puhan TI - Chronic respiratory symptoms but normal lung function: substantial disease burden but little evidence to inform practice AID - 10.1183/13993003.01363-2019 DP - 2019 Sep 01 TA - European Respiratory Journal PG - 1901363 VI - 54 IP - 3 4099 - http://erj.ersjournals.com/content/54/3/1901363.short 4100 - http://erj.ersjournals.com/content/54/3/1901363.full SO - Eur Respir J2019 Sep 01; 54