3Tseng TC,Liu CJ,Yang HC,et al.Determinants of spontaneous surface antigen loss in hepatitis Be antigen-negative patients with a low viral load[J].Hepatology,2012,55(1):68-76.
4Heathcote EJ,Marcellin P,Buti M,et al.Three-year efficacy and safety of tenofovir disoproxil fumarate treatment for chronic hepatitis B[J].Gastroenterology,2011,140(1):132-143.
5Pancher M,DésiréN,Ngo Y,et al.Coexistence of circulating HBs Ag and anti-HBs antibodies in chronic hepatitis B carriersis not a simple analytical artifact and does not influence HBs Ag quantification[J].J Clin Virol,2015(62):32-37.