D. Chataut, B. Basnet, B. Lohani, S. Suwal, S. Paudel, and P. Kayastha, “Correlation of Hypoechoic Lesions in Trans-rectal Ultrasound of Prostate with Histopathology in Prostate Cancer”, Journal of Institute of Medicine, vol. 42, no. 2, pp. 76–79, Aug. 2020.