About the Authors

Matthias Braun

Affiliation Division of Nephrology, University Hospital, Zürich, Switzerland

James Young

Affiliation Biometrical Practice BIOP AG, Basel, Switzerland

Cäcilia S. Reiner

Affiliation Division of Diagnostic and Interventional Radiology, University Hospital, Zürich, Switzerland

Diane Poster

Affiliation Division of Nephrology, University Hospital, Zürich, Switzerland

Fabienne Krauer

Affiliation Division of Nephrology, University Hospital, Zürich, Switzerland

Andreas D. Kistler

Affiliation Division of Nephrology, University Hospital, Zürich, Switzerland

Paulus Kristanto

Affiliation Medication Adherence Research Centre, AARDEX Group, Visé, Belgium

Xueqi Wang

Affiliation Department of Nephrology, Changzheng Hospital, Shanghai, China

Yang Liu

Affiliation Center for Integrative Human Research, University of Zürich, Zürich, Switzerland

Johannes Loffing

Affiliation Institute of Anatomy, University of Zürich, Zürich, Switzerland

Gustav Andreisek

Affiliation Division of Diagnostic and Interventional Radiology, University Hospital, Zürich, Switzerland

Arnold von Eckardstein

Affiliation Institute of Clinical Chemistry, University Hospital, Zürich, Switzerland

Oliver Senn

Affiliation Institute of General Practice and Health Services Research, University Hospital, Zürich, Switzerland

Rudolf P. Wüthrich

Affiliation Division of Nephrology, University Hospital, Zürich, Switzerland

Andreas L. Serra

andreas.serra@usz.ch

Affiliation Division of Nephrology, University Hospital, Zürich, Switzerland

Competing Interests

ALS received consulting fees from Hoffmann–La Roche and Nycomed, and grant support from Wyeth (now Pfizer); DP received travel support from Wyeth (now Pfizer); ADK received lecture fees from Wyeth and Genzyme, and travel support from Amgen; JY is an employee of Biometrical Practice BIOP; PK is an employee of Aardex; RPW received consulting and lecture fees from Genzyme, Novartis and Wyeth, and grant support from Wyeth. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: ALS DP ADK RPW. Performed the experiments: MB CSR FK PK XW YL JL GA AE. Analyzed the data: ALS JY OS. Contributed reagents/materials/analysis tools: JL. Wrote the paper: MB JY ALS RPW.