1 Department of Computer Science and Engineering, University of Nevada, Reno, NV, United States.
2 Division of Bioinformatics, Research Institute, National Cancer Center Japan, Tokyo, Japan.
3 Department of Applied Mathematics, University of Waterloo, Waterloo, ON, Canada.
4 Department of Mathematics, Ryerson University, Toronto, ON, Canada.
5 Department of Biology and Biochemistry, University of Houston, Houston, TX, United States.
6 Department of Bioinformatics and Computational Biology, Division of Basic Science Research, The University of Texas MD Anderson Cancer Center, Houston, TX, United States.