Shankar, Daya, Sunil Kumar, H.P. Singh, Veerendra Verma, and Anupam Mishra. 2018. “A Clinico-Radiological Study of Anatomical Variations of Nose and Para-Nasal Sinuses in Chronic Rhinosinusitis Patients”. International Journal of Otorhinolaryngology and Head and Neck Surgery 4 (4):1040-43. https://doi.org/10.18203/issn.2454-5929.ijohns20182709.