Natural Radiation in the Rocks, Soils, and Groundwater of Southern Florida with a Discussion on Potential Health Impacts.

Missimer TM1, Teaf C2, Maliva RG3,4, Danley-Thomson A5, Covert D6, Hegy M
Int J Environ Res Public Health. 2019 May 21;16(10). pii: E1793. doi: 10.3390/ijerph16101793

https://www.ncbi.nlm.nih.gov/pubmed/31117171