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[[File:Glossary Icon-2.png|100px|frameless|right|link=ICRP Glossary]]Act of avoiding harm. Non-maleficence is a key value of biomedical ethics. In radiological protection it is to reduce the direct and indirect harm and risk for individuals, communities and the environment. (Adapted from [[ICRP Publication 138]])

''[[ICRP Glossary entry - 7 March 2019''Publication 138]], 2018.