Funding for this research was provided by:
Päivikki ja Sakari Sohlbergin Säätiö (-)
Text and Data Mining valid from 2019-10-23
Received: 26 May 2019
Accepted: 13 September 2019
First Online: 23 October 2019
Compliance with ethical standards
: The study was approved by the ethical board of the Central Finland Health Care District 27.3.2017(6U/2017).
: The authors declare that they have no conflict of interest.