Date	Event	Description
22 October 2018	New citation required but conclusions have not changed	Conclusions not changed
14 May 2018	New search has been performed	The searches and risk of bias tables have been updated and a GRADE table added. We found no new trials for inclusion, so the total number of included studies remains at seven, with 239 participants. Two trials were of cross‐over design and outcome data were not available from the first phase (precross‐over) in an appropriate format for inclusion as a parallel randomised controlled trial (RCT). Thus, the results of the review were based on five trials with 213 participants. One trial appears to meet the inclusion criteria for the review, but data are not available in a format suitable for including in the analyses (Kim 2017a).