Okbay, A., J. P. Beauchamp, M. A. Fontana, J. J. Lee, T. H. Pers, C. A. Rietveld, P. Turley, et al. 2016. “Genome-wide association study identifies 74 loci associated with educational attainment.” Nature 533 (7604): 539-542. doi:10.1038/nature17671. http://dx.doi.org/10.1038/nature17671.