Comparison of exhaled breath condensate pH using two commercially available devices in healthy controls, asthma and COPD patients

by Vogelmeier Claus, Gauw Stefanie A, Bals Robert, Schot Robert, Dragonieri Silvano, Koczulla Rembert, Rabe Klaus F, Sterk Peter J, Hiemstra Pieter S
Published 2009-08-01