PT - JOURNAL ARTICLE AU - Gisele Walter Barbosa AU - J. Alberto Neder AU - Karina Utida AU - Denis E. O'Donnell AU - Paulo de Tarso Müller TI - Impaired exercise ventilatory efficiency in smokers with low transfer factor but normal spirometry AID - 10.1183/13993003.02511-2016 DP - 2017 Mar 01 TA - European Respiratory Journal PG - 1602511 VI - 49 IP - 3 4099 - http://erj.ersjournals.com/content/49/3/1602511.short 4100 - http://erj.ersjournals.com/content/49/3/1602511.full SO - Eur Respir J2017 Mar 01; 49