| Date | Event | Description |
|---|---|---|
| 4 December 2017 | New search has been performed | Searches of the Cystic Fibrosis and Genetic Disorders Review Group's trials registers and additional searches of electronic databases identified no new trials for inclusion in this review. |
| 4 December 2017 | New citation required but conclusions have not changed | Shane Thompson has stepped down from the author team at this update. No new trials were identified which were relevant to this review, hence our conclusions remain the same. |
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