1. Needleman, H. L. Salem comes to the National Institutes of Health: notes from inside the crucible of scientific integrity. Pediatrics 90, 977–981 (1992).
2. Newbrun, E. Effectiveness of water fluoridation. J. Public Health Dent. 49, 279–289 (1989).
3. Centers for Disease Control and Prevention. Water Fluoridation Data & Statistics. Monitoring Fluoridation in the United States. https://www.cdc.gov/fluoridation/statistics/index.htm. Accessed 10 Dec 2019.
4. Choi, A. L., Sun, G., Zhang, Y. & Grandjean, P. Developmental fluoride neurotoxicity: a systematic review and meta-analysis. Environ. Health Perspect. 120, 1362–1368 (2012).
5. Bashash, M. et al. Prenatal fluoride exposure and cognitive outcomes in children at 4 and 6–12 years of age in Mexico. Environ. Health Perspect. 1, 1–12 (2017).