The article you requested is

The Bipolar Brain: Integrating Neuroimaging and Genetics

J Clin Psychiatry 2014;75(6):e596 [book review]

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Bipolar disorders are increasingly recognized as both common and treatable. It is estimated that the disability caused by this psychiatric disorder costs almost $50 billion annually due to work loss, treatment costs, and other costs (p ix). The psychiatric descriptions and definitions of this entity are uneven.