Parameshwar Narayanakar, R., and D. S. Govinda Shetty. “A Study of Correlation of Pre-Operative Fine Needle Aspiration Cytology and Ultrasonography With Post-Operative Histopathology in Thyroid Swellings”. International Surgery Journal, vol. 7, no. 5, Apr. 2020, pp. 1456-60, doi:10.18203/2349-2902.isj20201851.