Ezkiaga, H., Aurrekoetxea, J., Espada, M. and Ibarluzea, J. (2017) “Smoking during pregnancy and subsequent attention-deficit/hyperactivity disorder in four year olds”, Osagaiz: osasun-zientzien aldizkaria, 1(2). doi: 10.26876/osagaiz.2.2017.96.