Text and Data Mining valid from 2018-07-31
Received: 5 May 2018
Accepted: 4 July 2018
First Online: 31 July 2018
Compliance with ethical standards
: This manuscript has not been published previously and is being submitted only to Journal of Nephrology. It will not be submitted elsewhere while under consideration and, should it be published in Journal of Nephrology, it will not be published elsewhere—either in similar form or verbatim—without permission of the editors. All authors are responsible for reported research and have participated in the concept and design, analysis and interpretation of data, drafting or revising, and have approved this manuscript as submitted.
: Approved by the Regional Committees on Health Research Ethics for Southern Denmark (protocol-id: S-20110085).
: Informed consent was obtained from all individual participants included in the study.