Ritu Ojha, Adity Prakash, Ashish Verma, Pramod Kumar Singh, Ram C Shukla, and Seema Khanna. “Role of Mammography and Ultrasound in Non- Palpable Lesions of the Breast Presenting With Mastalgia and Nipple Discharge”. International Journal of Health and Clinical Research, vol. 4, no. 14, Aug. 2021, pp. 364-9, https://ijhcr.com/index.php/ijhcr/article/view/2364.