RT Journal Article SR Electronic T1 The validation of assays used to measure biomarkers in exhaled breath condensate JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1408 OP 1409 DO 10.1183/09031936.00088608 VO 32 IS 5 A1 E. Sapey A1 D. Bayley A1 A. Ahmad A1 R. Stockley YR 2008 UL http://erj.ersjournals.com/content/32/5/1408.abstract AB