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Mayo Clinic, Radiation Safety, 200 First st. SW Rochester, MN 55905, USA.
D016288:Computer Terminals / Q000592:standards; D004583:Electrons / Q000009:adverse effects; D006283:Health Physics; D006801:Humans; D020407:Internet; D016273:Occupational Exposure; D011839:Radiation, Ionizing; D012449:Safety; D014896:Welding