M. S., Sudhakar Rao, Apoorva P., and Keerthi K. 2019. “Study of Blood Groups and Throat Swab Culture in Chronic Tonsillitis Among Pediatric Age Group”. International Journal of Otorhinolaryngology and Head and Neck Surgery 5 (6):1512-16. https://doi.org/10.18203/issn.2454-5929.ijohns20194919.