Reflections upon the incidence of posttransfusion hepatitis in various parts of the world.
D002353:Carrier State; D005843:Geography; D006509:Hepatitis B / Q000453:epidemiology*; D006801:Humans; D007564:Japan; D010507:Periodicity; D012621:Seasons; D065227:Transfusion Reaction; D014481:United States