Scientific Reports 7:12690; doi:10.1038/s41598-017-12696-7; Article published online 04 October 2017
The original HTML version of this Article contained an error in the Materials and Methods section under subheading ‘Data Analysis’.
“The fitted model was as comment = “The superscript "b" was missed in our manuscript. We have added it to the equation 1.“follows:”
“The fitted model was as follows:”
This error has now been corrected in the HTML version of the Article; the PDF version was correct from the time of publication.