Scientific Reports 5: Article number: 9378; published online: 23 March 2015; updated: 09 December 2016

This acknowledgments section in this Article is incomplete:

“This work was supported by National Science Centre (project grant no. UMO-2011/01/B/NZ1/03686 and N N301 668540)”.

should read:

“This work was supported by National Science Centre (project grant no. UMO-2011/01/B/NZ1/03686 and N N301 668540). Marta Moskot was funded by National Science Centre project grant no. UMO-2014/12/T/NZ2/00538”.