. 2015 Apr 23;16(1):52. doi: 10.1186/s12931-015-0210-x
© Kern et al.; licensee BioMed Central. 2015
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
Figure 2.
Kaplan-Meier curves for time to first COPD exacerbation and pneumonia diagnosis.