Aagaard, Kristina Aaskjær http://orcid.org/0000-0002-3409-6739
Al-Far, Hanine Mustafa http://orcid.org/0000-0002-8772-2908
Piscator, Ulrika http://orcid.org/0000-0001-8763-2788
Krogh, Rubab Agha http://orcid.org/0000-0002-8110-3866
Lauszus, Finn Friis http://orcid.org/0000-0003-3274-690X
Article History
Received: 3 January 2020
Accepted: 25 June 2020
First Online: 12 July 2020
Compliance with ethical standards
:
: The authors report no conflict of interest.
: The Danish Data Protection Agency approved the project (Nos. 1-16-02-824-17, 1-16-02-825-17 and 1-16-02-180-17) and the ethical standards were in line with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The original approvals are enclosed together with permission to internals addition of data from one cohort study to the other which is covered by the running permission no 621549 and belongs to the approval no 1-16-02-824-17. The regions umbrella permission further covers retrospective follow-up studies as long as no single person is identifiable and thus anonymous. The handling of data and expression by the Gynecology Dept, Herning of conforming with personal data law is further expressed by the Data handling agreement no. 509 with the National Health Authority. All above correspondences are added in originals to the submission. This article does not contain any studies with human participants performed by any of the authors.