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APA Citation
Punekar, Y., Mullerova, H., Small, M., Holbrook, T., Wood, R., Naya, I., & Valle, M. (2016). prevalence and Burden of Dyspnoea Among Patients with Chronic Obstructive Pulmonary Disease in Five European Countries. Pulmonary therapy, 2(1), 59–72. http://access.bl.uk/ark:/81055/vdc_100080471224.0x000018