RT Journal Article SR Electronic T1 Therapeutic implications of a precise diagnosis of airflow obstruction JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1091 OP 1094 DO 10.1183/09031936.93.03091091 VO 3 IS 9 A1 Picado, C YR 1990 UL http://erj.ersjournals.com/content/3/9/1091.abstract AB