Borsari L, Malagoli C, Werler MM, Rothman KJ, Malavolti M, Rodolfi R, De Girolamo G, Nicolini F, Vinceti M. Joint effect of maternal tobacco smoking and pregestational diabetes on preterm births and congenital anomalies: a population-based study in northern Italy. J Diabetes Res. 2018 Jun 28. doi: 10.1155/2018/2782741
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