1. Interventional Center of Valvular Heart Disease, Capital Medical University, Beijing Anzhen Hospital, Beijing, People’s Republic of China
2. School of Economics and Management, Beijing Institute of Petrochemical Technology, Beijing, People’s Republic of China
3. Development Research Centre of Beijing New Modern Industrial Area, Beijing, People’s Republic of China
4. School of Economics, Beijing Institute of Technology, Beijing, People’s Republic of China
5. Center for Energy and Environmental Policy Research, Beijing Institute of Technology, Beijing, People’s Republic of China
6. Sustainable Development Research Institute for Economy and Society of Beijing, Beijing, People’s Republic of China