Citizens for Radioactive Radon Reduction,
https://aoemj.biomedcentral.com/articles/10.1186/s40557-016-0093-4 "The percent AR of lung cancer deaths due to radon exposure…
https://aoemj.biomedcentral.com/articles/10.1186/s40557-016-0093-4 "The percent AR of lung cancer deaths due to radon exposure…
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4768325/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4768325/