After publication of the original article [1], the authors noticed that there is an error with the Funding section. The correct Funding Section should be:

This work was financially supported by the Polish National Science Center (NCN) grants no. DEC-2012/05/D/ST7/02072 (KJ, MK, KP), N N518 287540 (KS, AA) and DEC-2012/05/B/NZ2/01618 (PJ).