1. Centers for Disease Control and Prevention. Hepatitis surveillance report No.56 Atlanta GA: Centers for Disease control; 1995;.
2. Sjogren MH. Hepatitis A. Schiff's Diseases of the Liver. 8th ed Philadelphia: Lippincott-Raven; 1999;745-756.
3. Hadler SC. Global impact of hepatitis A virus infection changing patterns. Viral hepatitis and liver disease Baltimore, MD: Williams & Wilkins; 1991;14-20.
4. Bölke E, Flehmig B. New epidemiological patterns of hepatitis A and B infections in Germany. Zentralbl Hyg Umweltmed 1995;196:511-514.
5. Multistate Outbreak of Hepatitis A Associated with Frozen Strawberries