PT - JOURNAL ARTICLE AU - Jørgen G. Nielsen TI - Lung clearance index: should we really go back to nitrogen washout? AID - 10.1183/09031936.00069913 DP - 2014 Feb 01 TA - European Respiratory Journal PG - 655--656 VI - 43 IP - 2 4099 - http://erj.ersjournals.com/content/43/2/655.short 4100 - http://erj.ersjournals.com/content/43/2/655.full SO - Eur Respir J2014 Feb 01; 43