| Revision date This is the date when the review was published | Event | Description |
| 2022 Aug 04 | Amended | This was previously a living systematic review. Searches were run and screened monthly since May 2017. The review authors have decided to cease maintaining this review in living systematic mode, as a reasonable level of certainty has been reached in the existing evidence. |
| 2022 May 10 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 10 May 2022. One new study identified in April 2021, but is unlikely to have an important impact on review findings and will be integrated later. Another trial was identified in December 2021, and is being considered for inclusion. It is a small trial, and also unlikely to impact review findings. The review conclusions can be considered up to date. |
| 2022 Apr 11 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 12 April 2022. One new study identified in April 2021, but is unlikely to have an important impact on review findings and will be integrated later. Another trial was identified in December 2021, and is being considered for inclusion. It is a small trial, and also unlikely to impact review findings. The review conclusions can be considered up to date. |
| 2022 Feb 10 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 10 February 2022. One new study identified in April 2021, but is unlikely to have an important impact on review findings and will be integrated later. Another trial was identified in December 2021, and is being considered for inclusion. It is a small trial, and also unlikely to impact review findings. The review conclusions can be considered up to date. |
| 2022 Jan 17 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 17 January 2022. One new study identified in April 2021, but is unlikely to have an important impact on review findings and will be integrated later. Another trial was identified in December 2021, and is being considered for inclusion. It is a small trial, and also unlikely to impact review findings. The review conclusions can be considered up to date. |
| 2021 Nov 12 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 12 November 2021. One new study identified in April 2021, but is unlikely to have an important impact on review findings and will be integrated later. The review conclusions can be considered up to date. |
| 2021 Oct 12 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 12 October 2021. One new study identified in April 2021, but is unlikely to have an important impact on review findings and will be integrated later. The review conclusions can be considered up to date. |
| 2021 Sep 13 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 13 September 2021. One new study identified in April 2021, but is unlikely to have an important impact on review findings and will be integrated later. The review conclusions can be considered up to date. |
| 2021 Jul 12 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 12 July 2021. One new study identified in April 2021, but is unlikely to have an important impact on review findings and will be integrated later. The review conclusions can be considered up to date. |
| 2021 Jun 10 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 10 June 2021. One new study identified in April 2021, but is unlikely to have an important impact on review findings and will be integrated later. The review conclusions can be considered up to date. |
| 2021 Apr 10 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 10 April 2021. One new study identified but is unlikely to have an important impact on review findings and will be integrated later. The review conclusions can be considered up to date. |
| 2021 Feb 10 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 10 February, 2021. Results of all new studies identified have been incorporated. The conclusions of this Cochrane Review are therefore considered up to date. |
| 2021 Jan 12 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 12 January, 2021. Results of all new studies identified have been incorporated. The conclusions of this Cochrane Review are therefore considered up to date. |
| 2020 Nov 10 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 10 November, 2020. Results of all new studies identified have been incorporated. The conclusions of this Cochrane Review are therefore considered up to date. |
| 2020 Oct 12 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 12 October, 2020. Results of all new studies identified have been incorporated. The conclusions of this Cochrane Review are therefore considered up to date. |
| 2020 Sep 21 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 21 September, 2020. Results of all new studies identified have been incorporated. The conclusions of this Cochrane Review are therefore considered up to date. |
| 2020 Aug 12 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 12 August, 2020. Results of all new studies identified have been incorporated. The conclusions of this Cochrane Review are therefore considered up to date. |
| 2020 Jun 10 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 10 June, 2020. Results of all new studies identified have been incorporated. The conclusions of this Cochrane Review are therefore considered up to date. |
| 2020 May 11 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 11 May, 2020. Results of all new studies identified have been incorporated. The conclusions of this Cochrane Review are therefore considered up to date. |
| 2020 Apr 15 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 15 April, 2020. Results of all new studies identified have been incorporated. The conclusions of this Cochrane Review are therefore considered up to date. |
| 2020 Mar 11 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 11 March, 2020. Results of all new studies identified have been incorporated. The conclusions of this Cochrane Review are therefore considered up to date. |
| 2020 Feb 10 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 10 February, 2020. Results of all new studies identified have been incorporated. The conclusions of this Cochrane Review are therefore considered up to date. |
| 2020 Jan 13 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 13 January, 2020. Results of all new studies identified have been incorporated. The conclusions of this Cochrane Review are therefore considered up to date. |
| 2019 Dec 10 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 11 November, 2019. Results of all new studies identified have been incorporated. The conclusions of this Cochrane Review are therefore considered up to date. |
| 2019 Dec 10 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 10 December, 2019. Results of all new studies identified have been incorporated. The conclusions of this Cochrane Review are therefore considered up to date. |
| 2019 Oct 10 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 10 October, 2019. Results of all new studies identified have been incorporated. The conclusions of this Cochrane Review are therefore considered up to date. |
| 2019 Sep 12 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 11 September, 2019. Results of all new studies identified have been incorporated. The conclusions of this Cochrane Review are therefore considered up to date. |
| 2019 Aug 12 | Amended | This is a living systematic review. Searches are run and screened monthly. Last search date 12 August, 2019. Results of all new studies identified have been incorporated. The conclusions of this Cochrane Review are therefore considered up to date. |
