Funding for this research was provided by:
Swedish Breast Cancer Association
Karolinska Institute
Article History
Received: 7 June 2020
Accepted: 1 September 2020
First Online: 12 September 2020
Compliance with ethical standards
:
: Axel Frisell declares that he has no conflict of interest. Jakob Lagergren declares that he has no conflict of interest. Martin Halle declares that he has no conflict of interest<b>.</b> Jana de Boniface declares that she has no conflict of interest<b>.</b>
: The original study was approved by the Ethics Review Board at Karolinska Institutet, Stockholm, in 2016 (2016/1374-32). In this study did only involve human participants. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: The Ethical Review Board at Karolinska Institutet determined that individual informed consent was not required for this type of study.