title: Methodological considerations in studying natural history of HBeAg-negative and -positive chronic hepatitis B.
authors: Guohong
authors: G
authors: Cai
authors: Wen
authors: W
authors: Yin
mesh_terms: D006513:Hepatitis B e Antigens / Q000378:metabolism*; D006515:Hepatitis B virus / Q000502:physiology*; D019694:Hepatitis B, Chronic / Q000453:epidemiology* / Q000473:pathology* / Q000821:virology*; D006801:Humans; D008099:Liver / Q000473:pathology*; D019562:Viral Load / Q000502:physiology*
chemical_list: D006513:Hepatitis B e Antigens