著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) STIRLING RG,Increase in exhaled nitric oxide levels in patients with difficult asthma and correlation with symptoms and disease severity despite treatment with oral and inhaled corticosteroids,Asthma and Allergy Group. Thorax,,,1998,53,,1030-1034,https://cir.nii.ac.jp/crid/1571135650998951040,