Details of Ethics Approval
The Regional Committee on Health Research Ethics in the capital region of Denmark approved the study on May 3rd, 2020 with an additional protocol approved November 17th, 2020 (H-20028002). Written informed consent was collected from all participants before inclusion in the study. Furthermore, a written informed consent for publication was obtained from participant 5, 6, 27, and 28. Demographic and clinical data of participants as well as non-participants were extracted from the prospective national observational study “COVID-19 in pregnancy”, which was approved by the Danish Patient Safety Authority on April 24th, 2020 (reg. no. 31-1521-252) and the regional Data Protection Agency in Region Zealand on March 23rd, 2020 (reg. no. REG022-2020).