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. 2013 May 16;6:10.3402/gha.v6i0.20311. doi: 10.3402/gha.v6i0.20311

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© 2013 Roland Kersten 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 work is properly cited.

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Fig. 1 — Evaluation grid with indicator examples.