RT Journal Article SR Electronic T1 Precise diagnosis of airflow obstruction - does it matter for treatment? The assessment of reversibility: what physiological tests? JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1084 OP 1087 DO 10.1183/09031936.93.03091084 VO 3 IS 9 A1 Demedts, M YR 1990 UL http://erj.ersjournals.com/content/3/9/1084.abstract AB