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APA Citation
Feng, J., Ding, G., Xie, Y., Zhao, D., & Wang, X. (2018). efficacy of budesonide/formoterol and tiotropium combination for the treatment of Chinese patients with chronic obstructive pulmonary disease. Medicine, 97(22), . http://access.bl.uk/ark:/81055/vdc_100066545531.0x000037