Induchoodan, M., Madhavan, R. K., & George, S. (2021). Diagnostic value of tonsillectomy in positron emission tomography and computerised tomography negative carcinoma of unknown primary. International Journal of Otorhinolaryngology and Head and Neck Surgery, 7(10), 1673–1678. https://doi.org/10.18203/issn.2454-5929.ijohns20213904