Sreejaraj, Vellamparambil, Paul Vazhapilly Sumam, Verghese Nevil, Karuthedath Sridevi, and Ariyamparampil Rajagopalan Vinayakumar. 2018. “Prevalence of Helicobacter Pylori Colonisation in Tonsillar Tissue in Cases of Chronic Tonsillitis: A Prospective Study”. International Journal of Otorhinolaryngology and Head and Neck Surgery 4 (3):738-41. https://doi.org/10.18203/issn.2454-5929.ijohns20181863.