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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Beta coefficients from ordinary least-squares regression of percent of radon above 4 pCi/L on age-adjusted thyroid cancer incidence rate in county-level data from 3 US States. Cancer incidence 1990–2013.