Restrepo, J. E., Z. E. Ospina-Bran, y G. P. Cuartas-Montoya. «Mood and Perceived Social Support of Colombian Older Adults With Chronic Obstructive Pulmonary Disease During the Pandemic: A Cross-Sectional Descriptive Study». Gaceta Médica De Caracas, vol. 130, n.º 1, marzo de 2022, pp. 105-13, http://saber.ucv.ve/ojs/index.php/rev_gmc/article/view/23594.