Meyers J, Classi P, Wietecha L, Candrilli S. Economic burden and comorbidities of attention-deficit/hyperactivity disorder among pediatric patients hospitalized in the United States. Child Adolesc Psychiatry Ment Health. 2010 Dec 1;4:31.
Hartman M, Bolton E, Fehnel SE. Accounting for age differences on the Wisconsin Card Sorting Test: decreased working memory, not inflexibility. Psychol Aging. 2001 Sep 1;16(3):385-99.
Burudi EM, Karanja SM, Njue AI, Githiori JB, Ndung'u JM. Establishment of a partly DFMO-sensitive primate model of Trypanosoma rhodesiense sleeping sickness. Acta Trop. 1995 Mar;59(1):71-3.