Low-dose oral theophylline combined with inhaled corticosteroids for people with chronic obstructive pulmonary disease and high risk of exacerbations: a RCT.
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Health Technol Assess. 2019 Jul;23(37):1-146. doi: 10.3310/hta23370.
Health Technol Assess. 2019.
PMID: 31343402
Free PMC article.
Clinical Trial.