RT Journal Article SR Electronic T1 Investigative bronchoscopy in asthma and other airways diseases JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 8 OP 11 DO 10.1183/09031936.93.05010008 VO 5 IS 1 A1 LM Fabbri A1 A Ciaccia YR 1992 UL http://erj.ersjournals.com/content/5/1/8.abstract AB