Scientific Reports 7:1610; doi: 10.1038/s41598-017-01647-x; Article published online 03 May 2017

The original version of this Article contained an error in the author list where the authors Tiffanie Stewart and Chooda Khanal were inadvertently combined.

The affiliations of Tiffanie Stewart and Chooda Khanal are:

“Department of Electrical Engineering Florida International University, Miami, Florida, 33174, USA”

This has now been corrected in the HTML and PDF versions of this Article.