Scientific Reports 4: Article number: 750710.1038/srep07507; published online: December162014; updated: February252016.
This Article contains a typographical error in a grant number in the Acknowledgements section.
“This work was supported by the NSF of China (Grant Nos. 51332001, 11234005, 51472140 and 51221291), and the NSF (Grant No: DMR-1410714, DMR-0820404, and DMR-1210588).”
should read:
“This work was supported by the NSF of China (Grant Nos. 51332001, 11234005, 51472140 and 51221291), and the NSF (Grant No: DMR-1410714, DMR1420620, and DMR-1210588).”