Comparison of serum HBsAg quantitation by four immunoassays, and relationships of HBsAg level with HBV replication and HBV genotypes. oleh Edouard Tuaillon, Anne-Marie Mondain, Nicolas Nagot, Laure Ottomani, Dramane Kania, Erika Nogue, Pierre-Alain Rubbo, Georges-Philippe Pageaux, Philippe Van de Perre, Jacques Ducos