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. 2015 Jan 14;10(1):e0116656. doi: 10.1371/journal.pone.0116656

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© 2015 Mate 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 author and source are properly credited.

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The illustration shows an overview of our approach by combining several of the previous figures in a simplified fashion. The upper part (blue box) represents a mapping, which is visible to the user. The parts in the middle are internal ontology concepts that are hidden for the user. The SQL code in the lower part has been automatically compiled from the above ontologies.