1. Key Lab of Etiologic Epidemiology of National Health and Family Planning Commission
2. Key Lab of Etiologic Epidemiology of Education Bureau of Heilongjiang Province
3. The Center for Endemic Disease Control
4. Chinese Center for Disease Control and Prevention
5. Harbin Medical University
6. Community Health Service Center of Nanxiang Town
7. Jiading District
8. China
9. The Laboratory of Medical Genetics
10. Harbin 150081