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Authors
Heino, Toni
Kokko, Heta
Vuollo, Ville
Pirttiniemi, Pertti
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Funding
Funding for this research was provided by:
University of Oulu including Oulu University Hospital
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Article History
Received: 28 March 2019
Accepted: 14 October 2020
First Online: 3 December 2020
Compliance with ethical guidelines
:
: T. Heino, H. Kokko, V. Vuollo and P. Pirttiniemi declare that they have no competing interests.
: All procedures performed in studies involving human participants were in accordance with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Ethics committee approval was not required for the type of study that was initiated in 1992. The law of ethics committees in Finland was given in 1999, after which the ethics committee approval became mandatory. Written informed consent to participate was obtained from the parents of all patients in the study.
