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COPYRIGHT AND LICENSING

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OPEN ACCESS: This article is freely available. This article is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported Licence (CC BY-NC 3.0)

PEER REVIEW METHOD

: Single-blind

PUBLICATION HISTORY

: Received 25 January 2015; Accepted 26 March 2015; Accepted Manuscript published 27 March 2015; Advance Article published 8 April 2015; Version of Record published 15 May 2015