Funding for this research was provided by:
National Institute of Environmental Health Sciences (P42ES027706)
Received: 19 September 2019
Accepted: 6 December 2019
First Online: 19 December 2019
Ethics approval and consent to participate
: The author is an editor-in-chief of Environmental Health but was not involved in the editorial handling of the manuscript submitted. The author recently served as a health expert in a lawsuit in the U.S. on the protection against fluoride neurotoxicity from fluoride in drinking water.