Change in Exacerbation Rate of COPD Patients Before and after COVID-19 InfectionJoon Young Choi,Kyung Joo Kim,Chin Kook Rheenature（2025）引用 0|浏览1关键词COVID-19,COPD,Exacerbation,National health insurance,HIRA,Medical costAI 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
