Rare copy number variation in treatment-resistant major depressive disorder

Colm O'Dushlaine, Stephan Ripke, Douglas M. Ruderfer, Steven P. Hamilton, Maurizio Fava, Dan V. Iosifescu, Isaac S. Kohane, Susanne E. Churchill, Victor M. Castro, Caitlin C. Clements, Sarah R. Blumenthal, Shawn N. Murphy, Jordan W. Smoller, Roy H. Perlis