Ekvall, Markus http://orcid.org/0000-0001-6942-0458
Bergenstråhle, Ludvig http://orcid.org/0000-0002-5108-4481
Andersson, Alma http://orcid.org/0000-0002-4773-9975
Czarnewski, Paulo
Olegård, Johannes http://orcid.org/0000-0001-9082-4318
Käll, Lukas http://orcid.org/0000-0001-5689-9797
Lundeberg, Joakim http://orcid.org/0000-0003-4313-1601
Article History
Received: 10 July 2023
Accepted: 30 January 2024
First Online: 4 March 2024
Ethical declaration
: The Regional Ethical Review Board in Stockholm and the National Board of Health and Welfare granted approval for the use of human developmental heart tissue in the study. The acquisition of the tissue, along with the data processing, complied with the ethical guidelines set forth by the Helsinki Convention (Dnr 2:9/2015). The use of human fetal material from the elective routine abortions was approved by the Swedish National Board of Health and Welfare, and the analysis using this material was approved by the Swedish Ethical Review Authority (2018/769-31). The human developmental heart tissue, employed in this study, was obtained from medical abortions carried out at the Department of Gynecology, Danderyd Hospital and Karolinska Huddinge Hospital. All the patients involved gave their informed consent in written form.
: Then authors declare no competing interests.