Slavova, M. K., M. . Aleksieva, V. . Ilieva, P. . Gecov, and B. . Vladimirov. “‘Peptic Esophageal Stricture In A Patient With Parkinson’s Disease’”. International Journal of Medical Science and Clinical Invention, vol. 7, no. 06, June 2020, pp. 4832-6, doi:10.18535/ijmsci/v7i06.01.