Funding for this research was provided by:
Academy of Finland (320162, 303581)
University of Turku (UTU) including Turku University Central Hospital
Article History
Received: 8 April 2021
Accepted: 22 January 2022
First Online: 18 February 2022
Declarations
:
: The authors have no conflicts of interest relevant to this article to disclose.
: The ethics committee of Turku University Hospital approved the study design and it has been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.
: In 1989, the completed questionnaire provided informed consent, but formal, signed consent was required in the other three study years due to legislative changes.