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APA Citation
Jin, J., Zhang, H., Li, D., Jing, Y., Sun, Z., Feng, J., Zhang, H., Zhang, Y., Cui, T., Lei, X., Zhang, J., Cheng, Q., & Li, E. (2019). effectiveness of Xin Jia Xuan Bai Cheng Qi Decoction in treating acute exacerbation of chronic obstructive pulmonary disease: study protocol for a multicentre, randomised, controlled trial. BMJ open, 9(11), . http://access.bl.uk/ark:/81055/vdc_100137794104.0x00000b