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APA Citation
Feldman, G. J., Galkin, D. V., Patel, P., Collison, K. A., & Sharma, R. (2019). correct use and ease of use of a placebo dry powder inhaler in subjects with asthma and chronic obstructive pulmonary disease. Chronic respiratory disease, 16, . http://access.bl.uk/ark:/81055/vdc_100099926340.0x000048