Nurmi, Miina http://orcid.org/0000-0001-8186-4860
Rautava, Päivi
Gissler, Mika
Vahlberg, Tero
Polo-Kantola, Päivi
Funding for this research was provided by:
Varsinais-Suomen Sairaanhoitopiiri
University of Turku (UTU) including Turku University Central Hospital
Article History
Received: 21 September 2020
Accepted: 9 February 2022
First Online: 28 February 2022
Declarations
:
: The authors report no conflicts of interest.
: The study plan was evaluated and approved by the Ethical committee of Hospital District of Southwest Finland (43/180/2011).
: Not applicable; our research data are based on mandatory health registers, which are collected on the basis of Finnish health register legislation without informed consent. The use of register data is possible after the data keeping organizations have authorized the use of their data.
: Not applicable.