Nikkilä, Atte
Auvinen, Anssi
Kolho, Kaija-Leena
Funding for this research was provided by:
Pediatric Research Foundation
Helsinki University Hospital (TYH2018212 and TYH2020217)
Article History
Received: 14 April 2022
Accepted: 15 November 2022
First Online: 12 December 2022
Declarations
:
: In Finland, medical research involving invasive studies on humans must comply with the provisions of the Medical Research Act (488/1999). Moreover, research based purely on documentation or registered materials does not need to be reviewed by the regional ethics committees. Permission to use registry data was obtained from each database controller (Social Insurance Institution (SII) and Digital and Population Data Services Agency (DVV). The data linkage of registries was based on unique personal identifiers and once linked the analyses were pseudo-anonymous.
: Not applicable.
: The authors have no relevant financial or non-financial interests to disclose.