PT - JOURNAL ARTICLE AU - F. Madsen TI - Verification of equipment for measuring the diffusion capacity of the lung for carbon monoxide AID - 10.1183/09031936.00059109 DP - 2009 Aug 01 TA - European Respiratory Journal PG - 523--524 VI - 34 IP - 2 4099 - http://erj.ersjournals.com/content/34/2/523.short 4100 - http://erj.ersjournals.com/content/34/2/523.full SO - Eur Respir J2009 Aug 01; 34