PT - JOURNAL ARTICLE AU - Main, Eleanor TI - Airway clearance research in CF: the ‘perfect storm’ of strong preference and effortful participation in long-term, non-blinded studies AID - 10.1136/thoraxjnl-2012-203054 DP - 2013 Aug 01 TA - Thorax PG - 701--702 VI - 68 IP - 8 4099 - http://thorax.bmj.com/content/68/8/701.short 4100 - http://thorax.bmj.com/content/68/8/701.full SO - Thorax2013 Aug 01; 68