Ravishankar, K. S., and Atreya M. Subramanian. 2019. “Hobnail Variety of Papillary Cell Carcinoma Thyroid Mimicking a Thyroglossal Cyst: A Rare Presentation”. International Surgery Journal 6 (6):2198-2200. https://doi.org/10.18203/2349-2902.isj20192392.