2Brechot C,Thiers V,Kremsdorf D,et al.Persistent hepatitis B virus infection in subjects without hepatitis B surface antigeni;clinicly significant or purely "occult"?[J].Hepatology,2001,34 (1):194-203.
3Minuk GY,Sun DF,Uhanova,et al.Occult hepatitis B virus infection in a North American community-based population[J].J Hepatol,2005,42:480-485.
2Brechot C, Thiers V, Kremsdorf D, et al. Persistent hepatitis B virus infection in subjects without hepatitis B surface antigen: clinically significant or purely "occult"? Hepatology, 2001, 34: 194-203.
3Chan HL, Tsang S, Leung N, et al. Occult HBV infection in cryptogenic liver cirrhosis in an area with high prevalence of HBV infection.Am J Gastroenterol, 2002, 97:1211-1215.
4Yotsuyanagi H, Yasuda K, Moriya K, et al. Frequent presence of HBV in the sera of HBsAg-negative, anti-HBc-positive blood donors. Transfusion, 2001, 41: 1093-1099.
5Hu KQ. Occult hepatitis B virus infection and its clinical implications. J Viral Hepatitis, 2002, 9:243-257.
6Hou J, Wang Z, Cheng J, et al. Prevalence of naturally occurring surface gene variants of hepatitis B virus in nonimmunized surface antigen-negative chinese carriers. Hepatology, 2001, 34:1027-1034.
7Cacciola I, Pollicino T, Squadrito G, et al. Occult hepatitis B virus infection in patients with chronic hepatitis C liver disease. N Engl J Med, 1999, 341:22-26.
8Chemin Ⅰ, Zoulim F, Merle P, et al. High incidence of hepatitis B infections among chronic hepatitis cases of unknown aetiology. J Hepatol, 2001, 34:447-454.
9Berasain C, Betes M, Panizo A, et al. Pathological and virological findings in patients with persistent hypertransaminasaemia of unknown aetiology. Gut, 2000, 47:429-435.
10Blackberg J, Kidd-Ljunggren K. Occult hepatitis B virus after acute self-limited infection persisting for 30 years without sequence variation. J Hepatol, 2000, 33:992-997.