| Date | Event | Description |
|---|---|---|
| 13 December 2016 | New search has been performed | This review has been updated, and 11 new studies have been included: Davar 2007; Eftekhar 2012; Fatemi 2010; Greco 2016; Groenewoud 2016; Karimzadeh 2012; Mounce 2015; Azimi Nekoo 2015; Peeraer 2015; Ramos 2007; Weissman 2011 |
| 13 December 2016 | New citation required but conclusions have not changed | There was no change to our conclusions |
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