Teo, S.P. “Diagnostic and Management Challenges in Chronic Obstructive Pulmonary Disease and Heart Failure: The Need for an Interdisciplinary Approach”. JOURNAL OF GERONTOLOGY AND GERIATRICS 66, no. 2 (June 15, 2018): 64-65. Accessed December 4, 2021. http://www.jgerontology-geriatrics.com/article/view/94.