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. 2015 Dec 3;10:2609–2618. doi: 10.2147/COPD.S90148

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© 2015 Dhamane et al. This work is published by Dove Medical Press Limited, and licensed under Creative Commons Attribution – Non Commercial (unported, v3.0) License

The full terms of the License are available at http://creativecommons.org/licenses/by-nc/3.0/. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.

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All-cause health care costs by exacerbation frequency.

Note: *Statistically significant (P<001) trend.

Abbreviation: USD, United States dollar.