RT Journal Article SR Electronic T1 Report of ERS Task Force: guidelines for measurement of acellular components and standardization of BAL JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 245 OP 248 DO 10.1034/j.1399-3003.1999.14b01.x VO 14 IS 2 A1 PL Haslam A1 RP Baughman YR 1999 UL http://erj.ersjournals.com/content/14/2/245.abstract AB