Funding for this research was provided by:
Novo Nordisk Fonden (NNF 130C0002689)
Fonden til Lægevidenskabens Fremme (21. december 2016-16-87)
FP7 Regions of Sealand (412030)
Danish General Practice Fund (EMN-2017-00265)
Lilly and Herbert Hansens Fond (Agger 7. november 2016)
Received: 21 April 2020
Accepted: 2 December 2020
First Online: 4 January 2021
Ethics approval and consent to participate
: The practice staff gave oral and written information about the project to eligible women. All patients deciding to participate signed a consent form, giving access to the data from their Pregnancy Health Record and allowing the researchers to contact them and send the questionnaire by email. All procedures were in accordance with the Helsinki II Declaration and Danish law. Approval from the Danish Data Protection Agency was obtained (Journal 2014–41-3018). According to Danish law, studies based entirely on data collected from registers and questionnaires do not need approval from an ethics committee.
: Not applicable.
: The authors declare that no competing interests exist.