Aarnivala, Henri
Pokka, Tytti
Soininen, Riina
Möttönen, Merja
Harila-Saari, Arja
Niinimäki, Riitta
Funding for this research was provided by:
University of Oulu including Oulu University Hospital
Article History
Received: 7 May 2019
Revised: 19 September 2019
Accepted: 23 September 2019
First Online: 28 October 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest. The study did not involve any interventions on human participants by any of the authors, and all data were collected retrospectively by reviewing patient records.