Correction to: Scientific Reports https://doi.org/10.1038/s41598-018-25943-2, published online 16 May 2018

The original version of this Article contained a typographical error in the spelling of the author Nicaise Ndembi, which was incorrectly given as Nicaise Ndembe.

In addition, the author Nicole Noren Hooten was incorrectly indexed.

These errors have now been corrected in the PDF and HTML versions of the Article, and in the accompanying Supplementary Information file.