1. Xi'an Jiaotong University (XJTU), Xi'an, Shaanxi, China
2. University of Applied Sciences of Western Switzerland (HES-SO), Yverdon-les-Bains, Switzerland
3. Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
4. Imperial College London (ICL), London, U.K.