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APA Citation
Maltais, F., O'Donnell, D., Gáldiz Iturri, J. B., Kirsten, A., Singh, D., Hamilton, A., Tetzlaff, K., Zhao, Y., & Casaburi, R. (2018). effect of 12 weeks of once-daily tiotropium/olodaterol on exercise endurance during constant work-rate cycling and endurance shuttle walking in chronic obstructive pulmonary disease. Therapeutic advances in respiratory disease, 12, . http://access.bl.uk/ark:/81055/vdc_100078219756.0x000012