Funding for this research was provided by:
Stiftelsen Dorothea Olivia, Karl Walter och Jarl Walter Perkléns Minne
The Finnish Society of Nephrology
Received: 27 October 2019
Accepted: 3 February 2020
First Online: 10 February 2020
Ethics approval and consent to participate
: All patients and controls gave a written informed consent. The study was approved by the Ethical Committee of the hospital district of Southwest Finland and it was conducted in accordance with the Declaration of Helsinki as revised in 1996.
: Not applicable
: The authors declare that they have no competing interests.