Retraction to: BMC Res Notes (2018) 11:474 https://doi.org/10.1186/s13104-018–3590-4

The Editor has retracted this article [1]. Following publication, concerns were raised regarding the ethics approval for this study. Contrary to the statement in the article, the authors were unable to provide appropriate documentation confirming that ethics approval was obtained for this study. All authors agree to this retraction.