Salminen, Marika
Laine, Jonna
Vahlberg, Tero
Viikari, Paula
Wuorela, Maarit
Viitanen, Matti
Viikari, Laura
Article History
Received: 31 March 2020
Accepted: 17 May 2020
First Online: 4 June 2020
Compliance with ethical standards
:
: The authors declare they have no conflict of interest.
: The study was conducted according to the guidelines of the Declaration of Helsinki. The study protocol was approved by the Ethics Committee of the Hospital District of Southwest Finland and the City of Turku Ethical Committee on Health Care.
: Participants provided written informed consent for the study.