What determines the incidence of serum hepatitis after blood transfusion?
D000293:Adolescent; D000328:Adult; D000368:Aged; D002353:Carrier State / Q000453:epidemiology; D002648:Child; D004314:Down Syndrome / Q000276:immunology; D005260:Female; D006509:Hepatitis B / Q000453:epidemiology / Q000209:etiology*; D006778:Hospitals, Psychiatric; D006801:Humans; D007902:Length of Stay; D008131:London; D008297:Male; D008875:Middle Aged; D065227:Transfusion Reaction