PT - JOURNAL ARTICLE AU - A. Aliverti AU - M. Quaranta AU - B. Chakrabarti AU - A.L.P. Albuquerque AU - P.M. Calverley TI - Paradoxical movement of the lower rib cage at rest and during exercise in COPD patients AID - 10.1183/09031936.00141607 DP - 2008 Sep 17 TA - European Respiratory Journal 4099 - http://erj.ersjournals.com/content/early/2008/09/17/09031936.00141607.short 4100 - http://erj.ersjournals.com/content/early/2008/09/17/09031936.00141607.full