Funding for this research was provided by:
Breast Cancer Now (.)
H2020 European Research Council (H2020-MSCA-IF, 658170)
Wellcome Trust (ISSF3)
Breast Cancer Institute (.)
Breast Cancer Research Trust
Received: 4 July 2019
Accepted: 14 January 2020
First Online: 28 January 2020
Ethics approval and consent to participate
: All patients provided written informed consent and sample collection was approved by the local research ethics committee (Lothian NHS Local Research Ethics Committee 03, REC Reference number 07/S1103/26, approval date 13/08/2007).
: Not applicable.
: The authors declare that they have no competing interests.