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. 2014 Jul 18;11(7):7354–7375. doi: 10.3390/ijerph110707354

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© 2014 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Relationship between score (catchment characteristics questionnaire) and DOC (n = 8, R² = 0.28).