Article Information
PubMed
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Online ISSN
History
- Received: February 14, 2013
- Accepted: June 10, 2013
- Published online August 15, 2013.
Copyright & Usage
© Tappis et al.
This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly cited. To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/