Sistonen, Heli J.
Aro, Katri
Atula, Timo http://orcid.org/0000-0002-6560-1128
Jouhi, Lauri
Lindén, Riikka
Tapiovaara, Laura http://orcid.org/0000-0002-9747-6624
Loimu, Venla
Markkola, Antti
Funding for this research was provided by:
Helsingin ja Uudenmaan Sairaanhoitopiiri
University of Helsinki including Helsinki University Central Hospital
Article History
Received: 20 November 2020
Accepted: 22 March 2021
First Online: 20 April 2021
Declarations
:
: H.J. Sistonen, K. Aro, T. Atula, L. Jouhi, R. Lindén, L. Tapiovaara, V. Loimu and A. Markkola declare that they have no conflicting interests.
: The hospital ethics committee approved the study protocol and permission for an institutional study was granted. It has therefore been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments. The need for informed consent was waived because of the retrospective nature of the study.