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Health Protection Agency (HPA),
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American National Standards Institute (ANSI), Association for the Advancement of Medical Instrumentation (AAMI),
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Sci Technol Adv Mater 7 (4): 305-307
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World Health Organization (WHO),
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Institute of Electrical and Electronics Engineers (IEEE),
IEEE Std C95.1-2005: 1-238, ISBN 978-0-7381-4835-9
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World Health Organization (WHO),
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ASTM,
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National Radiological Protection Board (NRPB),
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