1. Department of Epidemiology and Biostatistics, School of Public Health, Fudan University, Shanghai 200032, China
2. Key Laboratory of Public Health Safety, Ministry of Education, Shanghai 200032, China
3. Laboratory for Spatial Analysis and Modeling, School of Public Health, Fudan University, Shanghai 200032, China
4. Ingerod, Brastad, Sweden
5. Schistosomiasis Station of Prevention and Control in Guichi Distirct, Anhui Province, China
6. Anhui Provincial Institute of Parasitic Diseases, Hefei, China