Alanen, Julia
Appelblom, Heidi
Korpimaki, Teemu
Kouru, Heikki
Sairanen, Mikko
Gissler, Mika
Ryynanen, Markku
Nevalainen, Jaana http://orcid.org/0000-0001-9720-9676
Funding for this research was provided by:
Otto A. Malm Lahjoitusrahasto
Maud Kuistilan Muistosäätiö
PerkinElmer
Article History
Received: 3 January 2020
Accepted: 25 June 2020
First Online: 11 July 2020
Compliance with ethical standards
:
: Heidi Appelblom, MSc, is a research scientist, Teemu Korpimaki, PhD, is a senior chemist, Heikki Kouru, PhD, is a senior statistician and Mikko Sairanen, PhD, is a scientific liaison working for PerkinElmer, Turku, Finland. PerkinElmer is a supplier of biochemical products for early pregnancy trisomy screening performed in Oulu University Hospital. The other authors have no potential conflicts of interest to disclose. The authors alone are responsible for the content and writing of the paper.
: The Institutional Ethics Committee of Oulu University Hospital and the National Institute for Health and Welfare approved this study.
: Informed consent was waived by the IRB as this was a retrospective study.