Date	Event	Description
5 January 2016	New search has been performed	A search of the Cochrane Cystic Fibrosis and Genetic Disorders Group's Cystic Fibrosis Trials Register identified a single new reference which has been listed as 'Awaiting assessment' until further information is available (Hanssens 2016a). One study previously listed as ongoing has been completed and published; however, on closer consideration this study was not eligible for inclusion in the review (Alicandro 2013). A further study previously listed as 'Awaiting assessment' was excluded due to insufficient information and a lack of response from the author (Starling 1988).
5 January 2016	New citation required but conclusions have not changed	The previous lead author (CO) has stepped down and is now the co‐author; the former co‐author (HW) is now the lead author. No new information has been included in this updated review, hence our conclusions remain the same.
26 November 2013	New citation required but conclusions have not changed	Nikki Jahnke has stepped down as co‐author and Helen Watson is the new co‐author on this review. No new studies were included in this update of the review, therefore our conclusions remain the same.
26 November 2013	New search has been performed	A search of the Cystic Fibrosis & Genetic Disorders Group's Cystic Fibrosis Trials Register identified four new references. Three of these related to a study previously listed as ongoing, including the full paper (Alicandro 2013); and the fourth was a reference to an abstract of a new study. We have excluded the Alicandro study and the new abstract by O'Sullivan is listed as awaiting classification until we can obtain further information to allow us to include or exclude the study (O'Sullivan 2011).
10 March 2011	New citation required but conclusions have not changed	The title of the review has been amended removing 'from fish oils' and hence expanding the different potential sources of omega‐3 fatty acids to be considered for this review. One of the authors, Dr Mark Everard, has stepped down from the review team. A new author, Nikki Jahnke, joined the team for this update. Another author, Tracy N'Diaye, has not been actively involved in this update of the review and is currently not listed on the citation.
10 March 2011	New search has been performed	A search of the Cystic Fibrosis Trials Register identified eleven new references to six trials which were potentially eligible for inclusion in the review. Three of these studies were excluded (Christophe 1992; Lloyd‐Still 2006; van Biervliet 2008). One study was listed as awaiting assessment (Starling 1988). One study was listed as ongoing (Alicandro 2013). One study was included in the review (Keen 2010).
11 November 2009	Amended	Contact details updated.
12 August 2009	Amended	Contact details updated.
13 June 2008	New search has been performed	A search of the Group's Cystic Fibrosis Trials Register did not identify any studies potentially eligible for inclusion in the review.
2 June 2008	Amended	Converted to new review format.
22 August 2007	Amended	The methodological quality of the two previously included studies were also re‐assessed using the criteria described by Jüni (Jüni 2001). Two studies previously listed as 'Awaiting assessment' have been excluded from the review on the basis of insufficient information and lack of response from the primary investigators. The previous 'Synopsis' has been replaced by a 'Plain Language Summary'. The outcome measures have been re‐ordered, a number of these have been moved from primary outcomes to secondary outcomes. Given that the review has been substantively updated and following the death of the previous lead author, Naomi Beckles‐Wilson, her name has been removed from the byline of this review and her contribution recognised in the 'Acknowledgements' section.
22 August 2007	New citation required and conclusions have changed	Substantive amendment
22 August 2007	New search has been performed	One new study has been included in the review (Panchaud 2006) and the methodological quality of the study was assessed using the criteria suggested by Jüni (Jüni 2001).
10 November 2004	New search has been performed	No new references were found in the latest search of the Group's trials register.
26 November 2003	New search has been performed	No new references were found in the latest search of the Group's trials register.
1 March 2002	New search has been performed	Handsearching of several ASPEN/ESPEN and BAPEN conference proceedings were carried out by a contributor to the Group for another review. This search was not thorough. However, some RCTs were identified, including one of the references included in this review (Manner 1993), identified from the ASPEN proceedings.