RT Journal Article SR Electronic T1 Adenosine 5'-monophosphate in asthma: gas exchange and sputum cellular responses JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society DO 10.1183/09031936.00116207 A1 H.A. Manrique A1 F.P. Gómez A1 P.A. Muñoz A1 A.M. Peña A1 J.A. Barberà A1 J. Roca A1 R. Rodríguez-Roisin YR 2008 UL http://erj.ersjournals.com/content/early/2008/02/20/09031936.00116207.abstract AB