1. What is cancer? MNT Knowledge Center (online). http://www.medicalnewstoday.com/info/cancer-oncology/. Accessed December 2014
2. Consensus document for management of breast cancer. Indian Council of Medical Research (online). http://www.icmr.nic.in/guide/cancer/Breast_Cancer.pdf. Accessed April 2018
3. Velez N, Earnest DE, Staren ED (2000) Diagnostic and interventional ultrasound for breast disease. Am J Surg 180(4):284–287
4. Crystal P, Strano SD, Shcharynski S, Koretz MJ (2003) Using sonography to screen women with mammographically dense breasts. Am J Radiol 181:177–182
5. Brem RM, Lenihan MJ, Lieberman J, Torrente J (2015) Screening breast ultrasound: past, present and future. Am J Roentgenol 204(2):234–240