Mario Fonseca, Gabriel. “Cheilitis Induced by Systemic Isotreinoin. Case Report”. Odontología Sanmarquina 11, no. 1 (July 15, 2008): 29–31. Accessed July 17, 2024. https://revistasinvestigacion.unmsm.edu.pe/index.php/odont/article/view/3075.