 The code for the study cohort will include personal identity as well as a study specific code. This is placed on a server, with limited access, at Sahlgrenska University Hospital. The database is placed on a server within the University of Gothenburg system accessible with username and code. The database includes only the study specific code for each participant. Data from questionnaires will be entered manually. Length of hospital stay will be acquired from the hospital registries and then entered manually into the database. Data from CRF I-III will be entered in the same database, as well as data retrieved from the Swedish National Breast Cancer Register, the National Death Register and Swedish Social Insurance Agency. 