1. Cancer statistics, https://www.cancer.gov/about-cancer/understanding/what-is-cancer
2. Breast Cancer, https://www.cancer.org/cancer/breast-cancer/about/what-is-breast-cancer.html
3. Siegel RL, Miller KD, Jemal A (2017) Cancer statistics, CA. Cancer J Clin 67(1):7–30
4. Sree SV, Ng E-K, Acharya RU, Faust O (2011) Breast imaging: a survey. World J Clin Oncol 2(4):171–178
5. Schneider M, Yaffe M (2000) Better detection: improving our chances, digital mammography. In: 5th International workshop on digital mammography