Funding for this research was provided by:
University of Gothenburg
Article History
Received: 22 September 2020
Accepted: 5 November 2020
First Online: 25 November 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: Ethical approval was waived by the local Ethics Committee in view of the non-invasive character and study on collection of voluntary donated fetal cadavers. The Institutional Ethics Committee was informed about the ongoing retrospective study and the Committee stated there was no need for its approval.