PT - JOURNAL ARTICLE AU - Michael S Schechter TI - Evaluating the Evidence for Airway-Clearance Therapy in Cystic Fibrosis DP - 2009 Apr 01 TA - Respiratory Care PG - 458--460 VI - 54 IP - 4 4099 - http://rc.rcjournal.com/content/54/4/458.short 4100 - http://rc.rcjournal.com/content/54/4/458.full