RT Journal Article SR Electronic T1 Precise diagnosis of airflow obstruction--does it matter for treatment? SEPCR Workshop, Wiesbaden 1989 JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1078 OP 1097 DO 10.1183/09031936.93.03091078 VO 3 IS 9 YR 1990 UL http://erj.ersjournals.com/content/3/9/1078.1.abstract