1. University of Science and Technology of China, Hefei, China
2. Hong Kong Polytechnic University (PolyU), Hong Kong
3. University of Electro-Communications, Chofu, Japan
4. University of California, Riverside (UCR), Riverside, CA, USA
5. Hong Kong University of Science and Technology, Hong Kong
6. Delft University of Technology, Delft, The Netherlands
7. University of Helsinki, Helsinki, Finland