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. 2016 Mar 7;2016:4929432. doi: 10.1155/2016/4929432

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Copyright © 2016 Peter P. Groenewegen et al.

This is an open access article distributed under 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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Box 1 — Box 1: Study design of the QUALICOPC study.