Author Contributions: Dr Jankowska 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: Jankowska, Reczuch, Borodulin-Nadzieja, Ponikowski.
Acquisition of data: Jankowska, Rozentryt, Ponikowska, Kustrzycka-Kratochwil, Nowak.
Analysis and interpretation of data: Jankowska, Hartmann, Kustrzycka-Kratochwil, Polonski, Banasiak, Poole-Wilson, Anker, Ponikowski.
Drafting of the manuscript: Jankowska, Hartmann, Ponikowski.
Critical revision of the manuscript for important intellectual content: Jankowska, Rozentryt, Ponikowska, Kustrzycka-Kratochwil, Reczuch, Nowak, Borodulin-Nadzieja, Polonski, Banasiak, Poole-Wilson, Anker, Ponikowski.
Statistical analysis: Jankowska, Hartmann.
Obtained funding: Borodulin-Nadzieja, Ponikowski.
Administrative, technical, or material support: Jankowska, Rozentryt, Ponikowska, Kustrzycka-Kratochwil, Reczuch, Nowak, Borodulin-Nadzieja, Banasiak, Ponikowski.
Study supervision: Jankowska, Polonski, Ponikowski.
Financial Disclosures: None reported.
Funding/Support: This research was supported by grant 3 T11F 008 30 from the Polish Ministry of Science and Higher Education (costs of the laboratory assessments). Dr Jankowska was supported by a Postdoctoral Research Fellowship from the Polish Science Foundation.
Role of the Sponsors: Neither the Polish Ministry of Science and Higher Education nor the Polish Science Foundation had any influence on the design and conduct of the study, in the collection, management, analysis, and interpretation of the data, or in the preparation, review, or approval of the manuscript.
Additional Information: Dr Poole-Wilson died unexpectedly after the submission of the manuscript and before final publication.