Sassi, Elina
Hannonen, Juuli
Serlo, Willy
Sinikumpu, Juha-Jaakko
Article History
Received: 21 December 2020
Accepted: 16 November 2021
First Online: 23 February 2022
Declarations
:
: This is a retrospective, registry-based study, and the patients were not contacted for the study’s purpose. The patients are not identifiable. The Ethical Committee of the Northern Finland Hospital District, Oulu, Finland, waived the need for ethical board approval as well as the need for informed consent. Institutional approval was achieved prior to the study. Consent to participate was not asked because the patients were not contacted. All procedures were performed in accordance with relevant guidelines.
: Not applicable.
: JJS has received grants for scientific work by the Foundation of Pediatric Research, Alma and K.A. Snellman Foundation and the Emil Aaltonen Foundation. He is a member of the European Pediatric Orthopedic Society and the European Pediatric Surgeons’ Association, the assistant editor of the Scandinavian Journal of Surgery, a member of the editorial board of the Journal of Children’s Orthopedics, and a vice-chair of the Finnish Pediatric Orthopedic Society. The other authors declare that they have no competing interests.