The hepatitis B occupational risk worksheet.
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University of California, San Diego, La Jolla 92093-0927.
D006509:Hepatitis B / Q000517:prevention & control / Q000635:transmission*; D006801:Humans; D009784:Occupational Diseases / Q000517:prevention & control*; D016273:Occupational Exposure; D012307:Risk Factors; D012574:Schools