“Development of Health-Based Exposure Limits for RFR from Wireless Devices Using a Benchmark Dose Approach,” Environmental Health, posted July 17, 2021. From the Environmental Working Group (EWG). Open access.
“The analysis presented here supports a whole-body SAR limit of 2 to 4 mW/Kg for adults, an exposure level that is 20- to 40-fold lower than the legally permissible limit of 0.08 W/Kg for whole-body SAR under the current U.S. regulations. A ten-fold lower level of 0.2–0.4 mW/Kg whole-body SAR may be appropriate for young children.”
To learn more about benchmark dose analysis, see this 2012 EPA report.
https://microwavenews.com/papers/ewg-rfr-limits