1. West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, People’s Republic of China
2. International Institute of Spatial Lifecourse Epidemiology (ISLE), Hong Kong, People’s Republic of China
3. Liangshan Prefecture Center for Disease Prevention and Control, Xichang, People’s Republic of China
4. Butuo County Center for Disease Prevention and Control, Butuo, People’s Republic of China
5. Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University, Hong Kong, People’s Republic of China
6. Centre for Health Behaviours Research, The Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong, People’s Republic of China