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History
- Received August 28, 2012
- Revision received April 16, 2013
- Accepted April 16, 2013
- First published May 22, 2013.
- Version of record published May 22, 2013.
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Copyright © 2013 the authors 0270-6474/13/339140-10$15.00/0
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Author contributions
Author contributions: S.L.R. and B.J.A. designed research; S.L.R., M.D., and N.N. performed research; S.L.R., G.G., D.F., N.N., and A.A.H. analyzed data; S.L.R. and B.J.A. wrote the paper.
Disclosures
- Received August 28, 2012.
- Revision received April 16, 2013.
- Accepted April 16, 2013.
This work was supported by the National Science Foundation Grant 0953106 to B.J.A. and Rackham Merit Fellowship to S.L.R. We thank Yan Liu for assistance with the opioid receptor autoradiography, Kirsten Porter-Stransky for statistical consultation, Piper Keyes for brain slicing, and Zouxin Wang for the generous donation of meadow voles.
The authors declare no competing financial interests.
- Correspondence should be addressed to either Brandon J. Aragona or Shanna L. Resendez, Department of Psychology, University of Michigan, Ann Arbor, MI 48109, aragona{at}umihc.edu or slharkey{at}umich.edu
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