Trends in severe COPD exacerbations and mortality following the introduction of ultralong-acting bronchodilators: an interrupted time-series study between 2007 and 2018 in the province Quebec, Canada
EUROPEAN RESPIRATORY JOURNAL(2023)
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要