Masalin, Senja http://orcid.org/0000-0003-3078-0303
Rönö, Kristiina
Kautiainen, Hannu
Gissler, Mika
Eriksson, Johan G.
Laine, Merja K.
Funding for this research was provided by:
Samfundet Folkhälsan
Helsingin Yliopisto
Helsingin ja Uudenmaan Sairaanhoitopiiri
Article History
Received: 11 September 2018
Accepted: 6 November 2018
First Online: 14 November 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: No animal or human studies were carried out by the authors for this article. The study has been approved by the health authority of Vantaa city, and by the ethics committee of the Hospital District of Helsinki and Uusimaa (356/13/03/03/2015, November 2nd 2015), Finland. The National Institute for Health and Welfare, and Statistics Finland gave their permission to use register data for the study.
: According to the health authority of Vantaa city, and the ethics committee of the Hospital District of Helsinki and Uusimaa, the study participants did not need to provide the Statement of Informed Consent as this is an observational register-based cohort study. For this type of study formal consent is not required.
: The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.