Palacio, A, Moncayo P, Febres Cordero RG, Hallón L, Llanos K. Presentation of the first Percutaneous transluminal valvuloplasty in Ecuador. Revista UG [Internet]. 1987 Dec. 30 [cited 2026 Apr. 21];70(3):22-31. Available from: https://revistas.ug.edu.ec/index.php/rug/article/view/894