The eighth author and the ninth author, Jie Du and Ming Zhang, should both be noted as corresponding authors of this work. Jie Du can be contacted at jiedubj@126.com. The publisher apologizes for this error.
Authors: Hai Gao; Raviteja Reddy Guddeti; Yasushi Matsuzawa; Li-Ping Liu; Li-Xiao Su; Duo Guo; Shao-Ping Nie; Jie Du; Ming Zhang Journal: PLoS One Date: 2015-05-04 Impact factor: 3.240