1. CoppaFeel! Breast cancer awareness. https://coppafeel.org/
2. Regular self-examination or clinical examination for early detection of breast cancer
3. Cancer Research UK. Breast cancer (invasive) incidence by age. https://www.cancerresearchuk.org/health-professional/cancer-statistics/statistics-by-cancer-type/breast-cancer/incidence-invasive#heading-One
4. Cancer Research UK. Breast cancer in situ incidence by age. https://www.cancerresearchuk.org/health-professional/cancer-statistics/statistics-by-cancer-type/breast-cancer/incidence-in-situ#heading-One
5. https://blogs.bmj.com/bmj/2011/09/07/richard-smith-communicating-with-patients-about-ductal-carcinoma-in-situ/