Gayoso Cervantes, Oscar. “Management of Acute Exacerbations of Chronic Pulmonary Obstructive Disease”. ACTA MEDICA PERUANA 26, no. 4 (December 31, 2009): 251 - 258. Accessed May 19, 2025. http://54.39.98.165/index.php/AMP/article/view/1537.