Funding for this research was provided by:
Stockholms Läns Landsting (not applicable)
Njurfonden (Not applicable)
Karolinska Institutet (not applicable)
Received: 21 January 2019
Accepted: 2 June 2019
First Online: 15 August 2019
Ethics approval and consent to participate
: The study protocol was approved by the local ethics committee (EPN, Stockholm, Sweden).Informed oral and written consent was obtained from each study participant.
: Not applicable.
: The authors declare that they have no competing interests.