RT Journal Article SR Electronic T1 Comparisons between portable and chemoluminescence exhaled nitric oxide measurements JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 243 OP 244 DO 10.1183/09031936.00025308 VO 32 IS 1 A1 A. Michils A1 R. Peché A1 S. Baldassarre A1 Z. Mourid A1 A. Van Muylem YR 2008 UL http://erj.ersjournals.com/content/32/1/243.abstract AB