Kedar, A., and S. Gupta. “School Related Factors Affecting Non Communicable Diseases Risk Factors Among 13-15 Years Old Adolescents from Two Schools in Delhi”. International Journal Of Community Medicine And Public Health, vol. 6, no. 7, June 2019, pp. 3087-96, doi:10.18203/2394-6040.ijcmph20192856.