Vaajala, Matias
Liukkonen, Rasmus
Kuitunen, Ilari
Ponkilainen, Ville
Mattila, Ville M.
Kekki, Maiju
Article History
Received: 22 November 2022
Accepted: 19 January 2023
First Online: 24 January 2023
Declarations
:
: All methods were carried out in accordance with Finnish regulations. The ethical committee of Tampere university hospital has waived the ethical committee evaluation of all retrospective studies utilizing routinely collected healthcare data and this decision is based on the law of medical research 488/1999 and the law of patient rights 785/1992. In accordance with Finnish regulations (the Law on the secondary use of routinely collected healthcare data 552/2019), no ethical informed written consent was required because of the retrospective register-based study design and the patients were not contacted. The authors did not have access to the pseudonymization key, as it is maintained by Findata. Permission for the use of the data was granted by Findata after evaluation of the study protocol. (Permission number: THL/1756/14.02.00/2020).
: Not applicable.
: The authors declare that they have no competing interests.