Arce, Roger Mauricio, Oscar Tamayo, and Armando Cortés. “Apoptosis of Gingival Fibroblasts in Periodontitis”. Colombia Medica 38, no. 3 (September 28, 2007): 197–209. Accessed June 1, 2025. https://colombiamedica.univalle.edu.co/index.php/comedica/article/view/505.