Launois R, Fiestas Navarette L, Ethgen O, Le Moine J, Gatsinga R. Health economic value of an innovation: delimiting the scope and framework of future market entry agreements. J Market Access Health Policy. 2014 Jun;2:24988. doi: 10.3402/jmahp.v2.24988
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