1. National data of class A and B infectious diseases in December 2004;Center for Public Health Surveillance Information Service C;Ji Bing Jian Ce,2005
2. Case of noticeable infectious disease (class A & B), China, December 1994;Center for Public Health Surveillance Information Service C;Ji Bing Jian Ce,1995
3. Epidemiological manifestation and trends of hepatitis A in Shanghai;Li;Shanghai Yu Fang Yi Xue Za Zhi,2000
4. Declining hepatitis A seroprevalence: a global review;Jacobsen;Epidemiol Infect,2004
5. Attenuated hepatitis A virus for vaccine development;Hu,1988