Grange F, Mohr P, Harries M, Ehness R, Benjamin L, Siakpere O, Barth J, Stapelkamp C, Pfersch S, McLeod LD, Kaye JA, Wolowacz S, Kontoudis I. Economic burden of advanced melanoma in France, Germany, and the UK: a retrospective observational study (Melanoma Burden-of-Illness Study). Melanoma Res. 2017 Dec;27(6):607-18. doi: 10.1097/CMR.0000000000000372
Glass RL, Rothman KJ, Espinal F, Velez H, Smith NJ. Prevalence of human dental caries and water-borne trace metals. Arch Oral Biol. 1973 Sep;18(9):1099-104. doi: 10.1016/0003-9969(73)90083-6