title: [A case report of HBsAg seroconversion with intrahepatic  hepatitis B virus covalently closed circular DNA during  nucleoside analog therapy].
authors.forename: Renfang
authors.initials: R
authors.lastname: Chen
authors.forename: Zhonghua
authors.initials: Z
authors.lastname: Lu
authors.forename: Lihua
authors.initials: L
authors.lastname: Huang
mesh_terms: D004270:DNA, Circular / Q000097:blood*; D006509:Hepatitis B / Q000097:blood* / Q000188:drug therapy / Q000821:virology*; D006514:Hepatitis B Surface Antigens / Q000097:blood*; D006515:Hepatitis B virus; D006801:Humans; D009705:Nucleosides / Q000627:therapeutic use*
chemical_list: D004270:DNA, Circular; D006514:Hepatitis B Surface Antigens; D009705:Nucleosides