| Date | Event | Description |
|---|---|---|
| 26 February 2021 | New citation required and conclusions have changed | Searches and results updated. We identified 6 studies in addition to the first version of this review (Alibeigi 2020Belan 2019Mutsaerts 2016Ng 2018Oostingh 2020Rossi 2013) |
| 18 February 2019 | New search has been performed | Background and Methods updated to meet current Cochrane standards |
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