Helminen, Olli http://orcid.org/0000-0001-9544-6475
Melkko, Jukka
Saarnio, Juha
Sihvo, Eero
Kuopio, Teijo
Ohtonen, Pasi
Kauppila, Joonas H.
Karttunen, Tuomo J.
Huhta, Heikki
Funding for this research was provided by:
Instrumentariumin Tiedesäätiö
Mary and Georg C. Ehrnrooth Foundation
Finnish State Research Funding
Pohjois-Pohjanmaan Rahasto
Vieno, Alli Suorsa’s Healthcare Foundation
Syöpäsäätiö
Sigrid Juséliuksen Säätiö
Päivikki ja Sakari Sohlbergin Säätiö
University of Oulu including Oulu University Hospital
Article History
Received: 1 March 2022
Revised: 22 April 2022
Accepted: 13 May 2022
First Online: 26 May 2022
Declarations
: The study was conducted according to the guidelines of the Declaration of Helsinki and was approved by the hospital districts. Use of the patient data were approved by the Ethics Committee (EETTMK: 81/2008). The need for written informed consents was waived by National Authority for Medicolegal Affairs (VALVIRA) due to its retrospective nature.
: The authors declare no competing interests.