1. 1. L. Friberg, Environ. Health Perspect., 1984, 54, 1.
2. 2. J. Huff, R. M. Lunn, M. P. Waalkes, L. Tomatis, and P. F. Infante, Int. J. Occup. Environ. Health, 2007, 13, 202.
3. 3. Ordinance of Ministry No. 35, 2014, Prime Minister’s Office, Japan.
4. 4. U. S. Environmental Protection Agency, “2012 Edition of the Drinking Water Standards and Health Advisories”, 2012, EPA-822-S-12-001, http://water.epa.gov/action/advisories/ drinking/upload/dwstandards2012.pdf.
5. 5. WHO, “Guidelines for Drinking-water Quality”, 4th ed., 2011, WHO Press, Genova.