Pennings, Guido https://orcid.org/0000-0003-0754-8055
Lassen, Emilie https://orcid.org/0000-0002-1484-2028
Lemmen, Josephine G. https://orcid.org/0009-0001-9034-8013
Skytte, Anne-Bine https://orcid.org/0000-0002-0067-9557
Article History
Received: 20 May 2025
Accepted: 6 July 2025
First Online: 17 July 2025
Declarations
:
: The egg donor study was approved by the WCG Institutional Review Boards (IRB tracking number 20220670, 19 June 2023). The sperm donor study was approved on 18 February 2021 by the University Research Ethics Committee of the University of Sheffield (reference number 038425) and on 9 March 2021 by the Ethics Committee of the Faculty of Arts and Philosophy of Ghent University (reference number 2021–09).
: GP is a member of the External Scientific Advisory Committee of Cryos Int.. EL, JGL and ABS are employed by Cryos Int.