Grizenko N., Bhat M., Schwartz G., Ter-Stepanian M., Joober R. (2006). Efficacy of methylphenidate in children with attention-deficit hyperactivity disorder and learning disabilities: a randomized crossover trial, J Psychiatry Neurosci, 31(1), 46-51.

Grizenko N., Kovacina B., Amor L. B., Schwartz G., Ter-Stepanian M., Joober R. (2006). Relationship between response to methylphenidate treatment in children with ADHD and psychopathology in their families, J Am Acad Child Adolesc Psychiatry, 45(1), 47-53.

Gruber R., Grizenko N., Schwartz G., Ben Amor L., Gauthier S., de Guzman R., Joober R. (2006). Sleep and COMT Polymorphism in ADHD Children: Preliminary Actigraphic Data, J Am Acad Child Adolesc Psychiatry, 45(8), 982-9.

Joober R., Grizenko N., Sengupta S., Amor L. B., Schmitz N., Schwartz G., Karama S., Lageix P., Fathalli F., Torkaman-Zehi A., Stepanian M. T. (2006). Dopamine Transporter 3'-UTR VNTR Genotype and ADHD: a Pharmaco-Behavioural Genetic Study with Methylphenidate, Neuropsychopharmacology.

Sengupta S. M., Grizenko N., Schmitz N., Schwartz G., Ben Amor L., Bellingham J., de Guzman R., Polotskaia A., Ter Stepanian M., Thakur G., Joober R. (2006). COMT Val108/158Met gene variant, birth weight, and conduct disorder in children with ADHD, J Am Acad Child Adolesc Psychiatry, 45(11), 1363-9.