1. Fudan University School of Public Health, Shanghai, China;
2. Key Laboratory of Public Health Safety, Fudan University, Ministry of Education, Shanghai, China;
3. Fudan University Center for Tropical Disease Research, Shanghai, China;
4. National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, China;
5. Jiading District Center for Disease Control and Prevention, Shanghai, China;
6. School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, Ottawa, Canada