Roncero, Carlos, Angel Egido, Laia Rodríguez-Cintas, Jesús Pérez-Pazos, Francisco Collazos, and Miguel Casas. 2015. “Substance Use Among Medical Students: A Literature Review 1988- 2013”. Actas Españolas De Psiquiatría 43 (3):109-21. https://actaspsiquiatria.es/index.php/actas/article/view/420.