Prakhar Sharma, N. K. , N. K. ,. “Prevalence of Bronchial Asthma Among School Children in Urban and Rural Areas and Associated Risk Factors: A Cross Sectional Study from Western Uttar Pradesh, India”. International Journal of Medical Science and Clinical Invention, vol. 4, no. 2, Feb. 2017, doi:10.18535/ijmsci/v4i2.02.