Article Information
- Received September 12, 2014
- Revision received December 2, 2014
- Accepted December 12, 2014
- First published February 11, 2015.
- Version of record published February 11, 2015.
Author Information
Author contributions
Author contributions: P.L.B. and D.A.W. designed research; P.L.B. performed research; P.L.B. and D.A.W. analyzed data; D.A.W. wrote the paper.
Disclosures
- Received September 12, 2014.
- Revision received December 2, 2014.
- Accepted December 12, 2014.
This work was supported by the Broad Foundations. D.A.W. is the recipient of a Career Award at the Scientific Interface from the Burroughs Wellcome Fund. We thank an anonymous reviewer for many valuable comments and in particular for the suggestion to consider bilateral pressure in the context of being pinched by a predator.
The authors declare no competing financial interests.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed.
- Correspondence should be addressed to Dr. Daniel A. Wagenaar, P.O. Box 210006, Cincinnati, OH 45221. daniel.wagenaar{at}uc.edu
