RT Journal Article SR Electronic T1 Clinical guidelines and indications for bronchoalveolar lavage (BAL): collagen-vascular diseases JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 942 OP 943 DO 10.1183/09031936.93.03080942 VO 3 IS 8 A1 B Wallaert A1 GA Rossi A1 Y Sibille YR 1990 UL http://erj.ersjournals.com/content/3/8/942.abstract AB