Hakonen, Elina http://orcid.org/0000-0002-9652-3724
Varimo, Tero
Tuomaala, Anna-Kaisa
Miettinen, Päivi J.
Pulkkinen, Mari-Anne
Funding for this research was provided by:
Helsinki University Pediatric Research Center
Article History
Received: 17 May 2021
Accepted: 10 January 2022
First Online: 19 January 2022
Declarations
:
: As this was a register-based study, the approval of an ethics committee was not required, but the research permit of the Helsinki University Hospital was obtained. The principles of Good Clinical Practice and the Declaration of Helsinki were followed and only the study personnel had access to the registry data handled.
: Not applicable.
: The authors declare that they have no competing interests.