1. Business School, Sichuan University, Chengdu, 610065 Sichuan, China
2. West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, 610041 Sichuan, China
3. Centre for Health Behaviours Research, The Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong, China
4. Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University, Hong Kong, China
5. International Institute of Spatial Lifecourse Epidemiology (ISLE), Hong Kong, China