A. K. Agarwal, R. Sharma, and V. Sharma, “Application of allergic rhinitis and its impact on asthma guidelines in terms of classification, risk factors, quality of life and co-morbidities in allergic rhinitis patients in Northern India”, Int J Otorhinolaryngol Head Neck Surg, vol. 6, no. 6, pp. 1082–1090, May 2020.