1. Viral hepatitis. New light on an old disease;Krugman;JAMA,1970
2. Hepatitis A transmitted by food;Fiore;Clin Infect Dis,2004
3. Prevention of hepatitis A through active or passive immunization: recommendations of the Advisory Committee on Immunization Practices (ACIP);Fiore;MMWR Recomm Rep,2006
4. Hepatitis A in daycare centers. A community-wide assessment;Hadler;N Engl J Med,1980
5. Frequency of illness associated with epidemic hepatitis A virus infections in adults;Lednar;Am J Epidemiol,1985