About the Authors

Martin Wagner

wagner_m@ukw.de

Affiliations Division of Nephrology, Department of Medicine I, University Hospital Würzburg, Würzburg, Germany, Institute of Clinical Epidemiology and Biometry, University of Würzburg, Würzburg, Germany, Comprehensive Heart Failure Center, University of Würzburg, Würzburg, Germany

Damien R. Ashby

Affiliation Kidney and Transplant Institute, Imperial College, London, United Kingdom

Caroline Kurtz

Affiliation Division of Nephrology, Department of Medicine I, University Hospital Würzburg, Würzburg, Germany

Ahsan Alam

Affiliation Division of Nephrology, McGill University, Montreal, Canada

Mark Busbridge

Affiliation Department of Clinical Chemistry, Imperial College, London, United Kingdom

Ulrike Raff

Affiliation Division of Nephrology and Hypertension, Department of Internal Medicine 4, University of Erlangen-Nürnberg, Erlangen, Germany

Josef Zimmermann

Affiliation Division of Nephrology, Department of Medicine I, University Hospital Würzburg, Würzburg, Germany

Peter U. Heuschmann

Affiliations Institute of Clinical Epidemiology and Biometry, University of Würzburg, Würzburg, Germany, Comprehensive Heart Failure Center, University of Würzburg, Würzburg, Germany, Clinical Trial Unit, University Hospital Würzburg, Würzburg, Germany

Christoph Wanner

Affiliation Division of Nephrology, Department of Medicine I, University Hospital Würzburg, Würzburg, Germany

Lothar Schramm

Affiliation Division of Nephrology, Department of Medicine I, University Hospital Würzburg, Würzburg, Germany

Competing Interests

The vast majority of the study was funded by the participating institutions. The principle investigators (Prof. C. Wanner, Prof. L. Schramm) and their personnel planned and conducted the study, including data collection, setting up the analysis plan and performing all analyses as well as discussing the results. Roche Pharma AG, Germany has provided dedicated grants to the institution (University Hospital Würzburg) for external measurements of hepcidin-25 and for staff support. Roche Pharma AG had no influence on the conduct of the study, data analysis, and interpretation of the results. The data are owned by the authors and Roche Pharma AG holds no database. Support of the study by Roche Pharma AG does not alter the authors' adherence to PLOS ONE policies on sharing data and materials. The authors themselves have no relevant conflicts of interest to declare with the results presented and discussed in the manuscript. However, more than 5 years ago (2008), Dr. Wagner received travel grants and speakers honoraria from Roche Pharma AG, Germany.

Author Contributions

Conceived and designed the experiments: MW DRA AA. Analyzed the data: MW CK. Contributed reagents/materials/analysis tools: MB DRA. Wrote the paper: MW DRA CK AA PUH CW. Data acquisition: CK UR JZ LS.