Nurkkala, Juho http://orcid.org/0000-0003-4053-8078
Lahtinen, Sanna
Kaakinen, Timo
Vakkala, Merja
Liisanantti, Janne
Article History
Received: 19 May 2020
Accepted: 8 July 2020
First Online: 14 July 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The study was approved by the hospital administration (208/2015 and 239/2016).
: Due to the retrospective cohort study design, no informed consent was obtained in accordance with Finnish law.