Updates are available Correction dated 2019-02-06
Click to view Correction: https://doi.org/10.1186/s40169-019-0222-0
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Article History
Received: 13 July 2016
Accepted: 17 September 2016
First Online: 20 October 2016
Change Date: 6 February 2019
Change Type: Correction
Change Details: The Editor of this journal has published this Expression of Concern to alert readers that, following publication of the article [1], it came to light that there were undeclared competing interests that have a direct impact on the article and the strength of its findings. In addition, post publication peer review has indicated that the conclusions may not be supported by the results due to methodological flaws in the study. Pending further investigation of these concerns, further editorial action may be taken. The authors have not responded to any correspondence about this Expression of Concern.
