1. NSFC-DFG Sino-German Cooperation Group on Urbanization and Locality (UAL), Peking University, College of Architecture and Landscape, Peking University, Beijing, P. R. China
2. College of Urban and Environmental Sciences, Peking University, Beijing, P.R. China
3. Peking University Hospital, Peking University, Peking University, Beijing, P.R. China