Date	Event	Description
10 April 2012	New citation required but conclusions have not changed	No trials have been added to this review, so the conclusions remain unchanged.
10 April 2012	New search has been performed	A search of the Group's Cystic Fibrosis Trials Register did not identify any new references potentially eligible for inclusion in this review.
7 July 2010	New search has been performed	A search of the Cystic Fibrosis Trials Register did not identify any references which were potentially eligible for inclusion in this review.
12 August 2009	Amended	Contact details updated.
1 July 2008	New search has been performed	A search of the Group's Cystic Fibrosis Trials Register did not identify any new references which were potentially eligible for inclusion in the review.
10 April 2008	Amended	Converted to new review format.
21 May 2007	New search has been performed	A search of the Group's Cystic Fibrosis Trials Register identified no additional trials eligible for inclusion in this review.
26 April 2006	New search has been performed	A search of the Group's Cystic Fibrosis Trials Register identified no additional trials eligible for inclusion in this review.
17 May 2005	New search has been performed	A search of the Group's Cystic Fibrosis Trials Register identified no additional trials eligible for inclusion in this review.
23 April 2004	New search has been performed	A search of the Group's trials register identified no additional trials eligible for inclusion in this review.