Lazebnik, L. B., S. A. Alekseenko, S. M. Tkach, Y. M. Stepanov, Y. Marakhouski, O. Zharskaya, B. I. Samikovich, N. Lucian, T. Myint, A. Garg, H. Pathak, and N. Pavlova. “Effect of Omeprazole on Patient-Reported Outcome Measures in Uninvestigated Heartburn: A Multi-Country, Multi-Center Observational Study”. International Journal of Research in Medical Sciences, vol. 9, no. 6, May 2021, pp. 1587-9, doi:10.18203/2320-6012.ijrms20211945.