Groff, P., Petrelli, G., Giorgini, P., Pilotti, R., Parato, V. M. and Fabbri, A. . (2021) “Clinical heterogeneity of a population of patients admitted to the Emergency Department with a diagnosis of COPD-exacerbation: Relevance of cardiovascular comorbidities”, Emergency Care Journal, 17(1). doi: 10.4081/ecj.2021.9502.