Funding for this research was provided by:
European Research Council (ERC-AdG 232997 TICE)
Received: 21 March 2020
Accepted: 10 May 2020
First Online: 20 May 2020
Ethics approval and consent to participate
: The women in this study have given written informed consent for blood sampling. We have received approval from the Regional Committee for Medical Research Ethics for the basic collection and storing of questionnaire information, blood samples and tumour tissue from patients. All women have provided informed consent for later linkages to the Cancer Registry of Norway, the Norwegian Mammographic Screening Program, and the register of death certificates in Statistics Norway. The informed consent formula explicitly mentions that the blood samples can be used for gene–environment analyses. All data are stored and handled according to the permission given from the Norwegian Data Inspectorate.
: Not applicable.
: The authors declare that they have no competing interests.