Muñoz Delgado S, Valencia LF, Villa R. I, Valdivieso H, Sánchez A. Techography. Intrauterine localization of copper T-type devices by transabdominal sonogram. Colomb Med [Internet]. 1990 Dec. 31 [cited 2024 Nov. 22];21(4):149-54. Available from: https://colombiamedica.univalle.edu.co/index.php/comedica/article/view/6320