Scientific Reports 6: Article number: 21282; Published online: 17 February 2016; Updated: 02 June 2016

The original version of this Article contained errors in the spelling of the authors Anis Allagui, Mohammad Ali Abdelkareem, Hussain Alawadhi and Ahmed S. Elwakil which were incorrectly given as Allagui Anis, Ali Abdelkareem Mohammad, Alawadhi Hussain and S. Elwakil Ahmed respectively.

These errors have now been corrected in the PDF and HTML versions of the Article.