Author Contributions: Dr Baraldi had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.
Study concept and design: Filippone, Baraldi.
Acquisition of data: Bonetto, Cherubin.
Analysis and interpretation of data: Filippone, Bonetto, Cherubin, Carraro, Baraldi.
Drafting of the manuscript: Filippone, Carraro, Baraldi.
Critical revision of the manuscript for important intellectual content: Filippone, Bonetto, Cherubin, Carraro, Baraldi.
Statistical analysis: Filippone, Cherubin, Carraro.
Administrative, technical, or material support: Baraldi.
Study supervision: Filippone, Baraldi.
Financial Disclosures: None reported.
Additional Contributions: Maurizio Schiavon, MD (Department of Social Health, Padua, Italy), contributed to recruitment of study participants and to their lung function assessment. Anna Chiara Frigo, MSc (University of Padua), contributed to statistical analysis. Neither received compensation for their role in this study.