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- 1Attention-deficit hyperactivity disorder. Chemotherapy. Economic aspects. North America.
- 1Attention-deficit hyperactivity disorder. Chemotherapy. North America. History. 20th century.
- 1Attention-deficit hyperactivity disorder. Treatment. North America. History. 20th century.
- 1Attention-deficit-disordered children. Medical care. History. 20th century.
- 1Child mental health. North America. Public opinion. History. 20th century.
- 1North America
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