title: The age distribution of hepatitis-associated antigen (HAA) in Switzerland.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005260:Female; D006509:Hepatitis B / Q000151:congenital / Q000276:immunology*; D006515:Hepatitis B virus / Q000276:immunology*; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000276:immunology; D008107:Liver Diseases / Q000276:immunology; D008431:Maternal-Fetal Exchange; D008875:Middle Aged; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000276:immunology*; D013557:Switzerland