1 Shaanxi Key Lab of Speech & Image Information Processing (SAIIP), School of Computer Science, Northwestern Polytechnical University, Xi'an 710072, China.
2 School of Computer Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
3 Faculty of Computational Mathematics & Cybernetics, Lomonosov Moscow State University, Moscow, Russia.
4 Berkeley Biomedical Data Science Center (BBDS), Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
5 Biomedical and Multimedia Information Technology (BMIT) Research Group, School of Information Technologies, University of Sydney, Sydney, NSW 2006, Australia.