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RELATED DATA

: Supplementary Information

COPYRIGHT AND LICENSING

: The PCCP Owner Societies have an exclusive publication licence for this journal

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

PEER REVIEW METHOD

: Single-blind

PUBLICATION HISTORY

: Received 20 October 2014; Accepted 8 January 2015; Accepted Manuscript published 8 January 2015; Advance Article published 15 January 2015; Version of Record published 18 March 2015