1. American College of Radiology (ACR) (2003) ACR BI-RADS: Breast imaging reporting and data system. Breast imaging atlas. American College of Radiology, Reston, VA
2. American College of Radiology (ACR) (2014) ACR BI-RADS Atlas, 5th ed. Reston, VA, American College of Radiology
3. An YY, Kim SH, Kang, BJ (2014) Characteristic features and usefulness of MRI in breast cancer in patients under 40 years old: correlations with conventionel imaging and prognostic features. Breast Cancer 21: 302–315
4. Appleton DC, Hackney L, Narayanan S (2014) Ultrasonography alone for diagnosis of breast cancer in women under 40. Ann R Coll Surg Engl 96: 202–206
5. Azim HA Jr, Santoro L, Russell-Edu W, et al (2012) Prognosis of pregnancy-associated breast cancere: a metaanalysis of 30 studies. Breast Cancer 38: 843–842