%0 Journal Article %A Smith, Lewis J. %T The lower limit of normalversus一个固定的比例来评估气流限制:the debate ever end? %D 2018 %R 10.1183/13993003.00403-2018 %J European Respiratory Journal %P 1800403 %V 51 %N 3 %U //www.qdcxjkg.com/content/erj/51/3/1800403.full.pdf