View source for Regional diagnostic reference levels

[[File:Glossary Icon-2.png|100px|frameless|right|link=ICRP Glossary]]
DRLs set in a region based on either a representative sample of health facilities or on [[national DRL value]]s. ‘[[Regional]]’ is used in [[ICRP Publication 135]] to refer to a group of countries.

([[ICRP Publication 131]], 2015)

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