Vert C, Sanchez-Benavides G, Martinez D, Gotsens X, Gramunt N, Cirach M, Molinuevo JL, Sunyer J, Nieuwenhuijsen MJ, Crous-Bou M, Gascon M. Effect of long-term exposure to air pollution on anxiety and depression in adults: a cross-sectional study. Int J Hyg Environ Health. 2017 Aug;220(6):1074-80. doi: 10.1016/j.ijheh.2017.06.009