Lega, Leonor I., and Jorge Lega-Siccar. “Influencia De Los Factores Emocionales En La Colitis Ulcerosa”. Colombia Medica 25, no. 1 (November 13, 1994): 15–17. Accessed April 20, 2024. https://colombiamedica.univalle.edu.co/index.php/comedica/article/view/1778.