RT Journal Article SR Electronic T1 Not all laboratories are alike JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1054 OP 1054 DO 10.1183/09031936.01.17510541 VO 17 IS 5 A1 C.S. Pao A1 P.D. Bridge A1 S.A. McKenzie YR 2001 UL http://erj.ersjournals.com/content/17/5/1054.1.abstract AB