Funding for this research was provided by:
Syddansk Universitet (500.000DKR)
The Region of Southern Denmark (500.000DKR)
Department of Gynecology and Obstetrics, Odense University Hospital (500.000DKR)
Text and Data Mining valid from 2018-06-14
Received: 24 August 2017
Accepted: 31 May 2018
First Online: 14 June 2018
Ethics approval and consent to participate
: The need for consent from the participants is deemed unnecessary by The Regional Committees on Health Research Ethics for Southern Denmark because it is a register-based study (reference number S-20142000 HLP) and the use of medical records for the study was approved by the Danish Health Authority (reference number 3-3013-806/1 and 3-3013-806/2).
: The authors declare that they have no competing interests.
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