Funding for this research was provided by:
Swedish Breast Cancer Association (.)
Visare Norr grant (grant no: 750491)
The Department of Research and Development Västernorrland County Council (grant no: LVNFOU834391)
The Percy Falk Foundation for medical research (.)
Received: 30 July 2019
Accepted: 15 January 2020
First Online: 22 January 2020
Ethics approval and consent to participate
: All procedures performed in this study involving human participants were in accordance with the ethical standards of the regional committee of ethics in Stockholm, reference number 2013/1272-31/4 and with the 164 Helsinki Declaration and its later amendments or comparable ethical standards.
: Not applicable.
: The authors declare that they have no competing interests.