title: Breast cancer and breastfeeding.
authors.forename: Ivar
authors.initials: I
authors.lastname: Heuch
authors.forename: Bjarne K
authors.initials: BK
authors.lastname: Jacobsen
authors.forename: Gunnar
authors.initials: G
authors.lastname: Kvåle
mesh_terms: D000328:Adult; D000368:Aged; D001942:Breast Feeding; D001943:Breast Neoplasms / Q000453:epidemiology / Q000517:prevention & control*; D005260:Female; D006801:Humans; D015994:Incidence; D008875:Middle Aged; D009664:Norway / Q000453:epidemiology; D012042:Registries; D012424:Rural Population