Diagnostic reference levels--the way forward.
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National Radiological Protection Board, Chilton, Didcot, Oxon OX11 0RQ, UK.
D006801:Humans; D011829:Radiation Dosage; D011835:Radiation Protection / Q000592:standards; D011859:Radiography / Q000592:standards*; D012016:Reference Values; D006113:United Kingdom