title: [An analysis of the genetic epidemiology of hepatitis B infection in twins].
mesh_terms: D002648:Child; D004200:Diseases in Twins; D005260:Female; D006509:Hepatitis B / Q000453:epidemiology / Q000235:genetics*; D006514:Hepatitis B Surface Antigens / Q000032:analysis; D006801:Humans; D008297:Male; D014429:Twins, Dizygotic; D014430:Twins, Monozygotic
chemical_list: D006514:Hepatitis B Surface Antigens