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.
Pattanayak SK, Poulos C, Yang JC, Patil S. How valuable are environmental health interventions? Evaluation of water and sanitation programmes in India. Bull World Health Organ. 2010 Jul 1;88(7):535-42.