Updates are available Correction dated 2020-07-29
Click to view Correction: https://doi.org/10.1186/s12884-020-03119-z
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Authors
Rissanen, Annu-Riikka S. https://orcid.org/0000-0001-7840-0870
Jernman, Riina M.
Gissler, Mika
Nupponen, Irmeli
Nuutila, Mika E.
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Funding
Funding for this research was provided by:
Päivikki ja Sakari Sohlbergin Säätiö
Helsingin Yliopisto (State research Funding)
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More Information
Article History
Received: 10 April 2018
Accepted: 10 September 2019
First Online: 18 September 2019
Change Date: 29 July 2020
Change Type: Correction
Change Details: An amendment to this paper has been published and can be accessed via the original article.
Ethics approval and consent to participate
: This study was conducted with the permission of Helsinki University Hospital and Helsinki University Hospital Ethics Committee (TMK03 §162, 300/13/03/03/2005, final changes accepted 16.6.2016). A separate permission by the Finnish Institute for Health and Welfare, Finland, was granted to use the register data. Consent to participate- not applicable.
: Not applicable.
: The authors declare that they have no competing interests.
