Kukk, Katrin http://orcid.org/0000-0001-8566-2115
Akkermann, Kirsti
Article History
Received: 9 May 2019
Accepted: 30 September 2019
First Online: 16 October 2019
Compliance with ethical standards
:
: The authors declared no potential conflicts of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the University of Tartu ethics committee and with the 1964 Helsinki Declaration and its later amendments.
: Informed consent was obtained from all individual participants included in the study.