Ferrer M, Garcia-Esteban R, Iniguez C, Costa O, Fernandez-Somoano A, Rodríguez-Delhi C, Ibarluzea J, Lertxundi A, Tonne C, Sunyer J, Julvez J. Head circumference and child ADHD symptoms and cognitive functioning: results from a large population-based cohort study. Eur Child Adolesc Psychiatry. 2019 Mar;28(3):377-88. doi: 10.1007/s00787-018-1202-4
Ramos R, Freire C, Julvez J, Fernandez MF, Garcia-Esteban R, Torrent M, Sunyer J, Olea N. Association of ADHD symptoms and social competence with cognitive status in preschoolers. Eur Child Adolesc Psychiatry. 2013 Mar;22(3):153-64. doi: 10.1007/s00787-012-0334-1
Cohen LM, Britt DM, Collins FL, Stott HD, Carter LC. Chewing gum affects smoking topography. Exp Clin Psychopharmacol. 1999 Nov 1;7(4):444-7.