Caicedo B, Fonseca JE. Retro-pneumoperitoneo diagnóstico con complicaciones cardiovascualres. Colomb Med [Internet]. 1979 Dec. 30 [cited 2025 Dec. 11];10(3,4):137-41. Available from: http://colombiamedica.univalle.edu.co/index.php/comedica/article/view/2919