Hepatitis B virus infections.
D000293:Adolescent; D000914:Antibodies, Viral / Q000032:analysis; D002353:Carrier State / Q000453:epidemiology*; D005260:Female; D006509:Hepatitis B / Q000453:epidemiology*; D006514:Hepatitis B Surface Antigens / Q000032:analysis; D006801:Humans; D008297:Male; D009520:New Zealand
D000914:Antibodies, Viral; D006514:Hepatitis B Surface Antigens