Review of nine year prevalence of hepatitis B surface antigen at the hospital of the University of Pennsylvania.
D003428:Cross Infection / Q000517:prevention & control; D006509:Hepatitis B / Q000517:prevention & control; D006514:Hepatitis B Surface Antigens / Q000032:analysis*; D006801:Humans; D007676:Kidney Failure, Chronic / Q000276:immunology* / Q000628:therapy; D006435:Renal Dialysis
D006514:Hepatitis B Surface Antigens