Felix Osuna-Gutierrez, Paola Lizette Padilla-Mena, Andres Refugio Martinez-Uresti, Carlos M. Padilla-Valadez, and Javier Contreras-Cardenas. 2022. “Use of Legal and Illegal Substances and Their Impact on the Academic Performance of Medical University Students”. International Journal of Medical Science and Clinical Research Studies 2 (4):266-73. https://doi.org/10.47191/ijmscrs/v2-i4-03.