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APA Citation
Kerkhof, M., Sonnappa, S., Postma, D. S., Brusselle, G., Agustí, A., Anzueto, A., Jones, R., Papi, A., Pavord, I., Pizzichini, E., Popov, T., Roche, N., Ryan, D., Thomas, M., Vogelmeier, C., Chisholm, A., Freeman, D., Bafadhel, M., Hillyer, E. V., & Price, D. B. (2017). blood eosinophil count and exacerbation risk in patients with COPD. European respiratory journal, 50(1), . http://access.bl.uk/ark:/81055/vdc_100172025332.0x0000bb