Wronski SL, Mordin M, Kelley K, Anguiano RH, Classi P, Shen E, Manaker S. The role of noninvasive endpoints in predicting long-term outcomes in pulmonary arterial hypertension. Lung. 2020 Feb;198(1):65-86. doi: 10.1007/s00408-019-00289-2
Rycroft CE, Heyes A, Lanza L, Becker K. Epidemiology of chronic obstructive pulmonary disease: a literature review. Int J Chron Obstruct Pulmon Dis. 2012 Jul 1;7:457-94.