About the Authors

Natasha J. McIntyre

Affiliation Department of Renal Medicine, Royal Derby Hospital, Derbyshire, United Kingdom

Richard J. Fluck

Affiliation Department of Renal Medicine, Royal Derby Hospital, Derbyshire, United Kingdom

Christopher W. McIntyre

Affiliations Department of Renal Medicine, Royal Derby Hospital, Derbyshire, United Kingdom, Department of Vascular Medicine, University of Nottingham, Nottingham, United Kingdom

Apostolos Fakis

Affiliation Department of Renal Medicine, Royal Derby Hospital, Derbyshire, United Kingdom

Maarten W. Taal

maarten.taal1@nhs.net

Affiliation Department of Renal Medicine, Royal Derby Hospital, Derbyshire, United Kingdom

Competing Interests

As regards potential competing interests the authors would like to clarify that the support from Roche Products plc was in the form of an unrestricted educational grant. Specifically this means that Roche played no role whatever in the initiation, design or conduct of the study and have no ownership of the data. The authors are not obligated to provide Roche with any publications prior to submission and are not required to seek approval from Roche for any publications. The authors are therefore able to confirm unequivocally that the sponsorship from Roche does not alter their adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: NJM RJF CWM AF MWT. Performed the experiments: NJM MWT. Analyzed the data: NJM AF MWT. Wrote the paper: NJM RJF CWM AF MWT.