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APA Citation
O'Donnell, D. E., Laveneziana, P., Ora, J., Webb, K. A., Lam, Y., & Ofir, D. (2009). evaluation of acute bronchodilator reversibility in patients with symptoms of GOLD stage I COPD. Thorax, 64(3), 216–223. http://access.bl.uk/ark:/81055/vdc_100135156177.0x000031