Baptista, J., Belsky, J., Mesquita, A. & Soares, I. (2017). Serotonin transporter polymorphism moderates the effects of caregiver intrusiveness on ADHD symptoms among institutionalized preschoolers. European Child and Adolescent Psychiatry, 26(3), 303?313. https://doi.org/10.1007/s00787-016-0890-x