Population-based data as an important contribution to better investigate chronic respiratory diseases
Submitted: February 18, 2016
Accepted: February 18, 2016
Published: June 30, 2005
Accepted: February 18, 2016
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All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.