1. National Institute of Parasitic DiseasesChinese Center for Disease Control and Prevention, Shanghai, People's Republic of China
2. Key Laboratory of Parasite and Vector BiologyMinistry of Health, WHO Collaborating Centre for Malaria, Schistosomiasis and Filariasis, Shanghai, People's Republic of China
3. National Center for Tuberculosis Control and PreventionChinese Center for Disease Control and Prevention, Beijing, People's Republic of China
4. School of Mathematics and Physics, North China Electric Power University, Beijing, People's Republic of China
5. Department of Epidemiology and Health StatisticsSchool of Public Health, Shandong University, Jinan, People's Republic of China