http://www.nlm.nih.gov/medlineplus/ency/article/000279.htm Hepatitis B Hepatitis B http://www.nlm.nih.gov/medlineplus/ency/article/000279.htm MedlinePlus acute viral hepatitis US National Library of Medicine Hepatitis B acute viral hepatitis http://www.nlm.nih.gov/medlineplus/ency/article/000279.htm acute viral hepatitis