Parasher, A., and K. Ranjan. “The Prevalence of Gastroesophageal Reflux Disease and Its Association With Various Risk Factors in a Tertiary Care Centre in West Bengal”. International Journal of Research in Medical Sciences, vol. 9, no. 3, Feb. 2021, pp. 780-5, doi:10.18203/2320-6012.ijrms20210877.