I. Mishura, Zoya, Ruslan K. Paliyenko, and Nizar R. Kerbazh. “The Level of Matrix Metalloproteinase-9 in the Serum As a Prognostic Sign in Extrasphincteric Fistulas of the Rectum”. International Journal of Medicine 9, no. 2 (July 24, 2021): 60–62. Accessed May 2, 2024. https://sciencepubco.com/index.php/IJM/article/view/31595.