© The Author(s) (published via SpringerOpen)

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Remarks:
SpringerOpen journals:
– Copyright on any research article in a SpringerOpen journal is retained by the author(s).
– Authors grant Springer a license to publish the article and identify Springer as the original publisher.
– Authors also grant any third party the right to use the article freely as long as its integrity is maintained and its original authors, citation details and publisher are identified.
– The SpringerOpen Copyright and License Agreement (identical to the Creative Commons Attribution License) formalizes these and other terms and conditions of publishing research articles.

Verification Date:

 25.10.2012
11.12.2012