1 Department of Earth Sciences, Kunming University of Science and Technology, Kunming, 650093, China.
2 Department of Epidemiology and Preventive Medicine Alfred Hospital, Faculty of Medicine, Nursing & Health Sciences, Monash University, Melbourne, VIC, Australia.
3 School of Medical Humanities, China Medical University, Shenyang, 110122, China.
4 Department of Earth Sciences, Kunming University of Science and Technology, Kunming, 650093, China. caoguangzhu@kust.edu.cn.