Serum Hepatitis.
D003428:Cross Infection / Q000517:prevention & control*; D006525:Hepatitis, Viral, Human / Q000209:etiology / Q000517:prevention & control*; D006801:Humans; D007674:Kidney Diseases / Q000451:nursing; D009741:Nursing Staff, Hospital; D009784:Occupational Diseases / Q000517:prevention & control