Yan, Gang
Vértes, Petra E.
Towlson, Emma K.
Chew, Yee Lian
Walker, Denise S.
Schafer, William R.
Barabási, Albert-László
Article History
Received: 8 December 2016
Accepted: 4 September 2017
First Online: 18 October 2017
Competing interests
: The authors declare no competing financial interests.