title: [Present status and problems of early diagnosis of small airway diseases].
mesh_terms: D001982:Bronchial Diseases / Q000175:diagnosis*; D003011:Closing Volume; D006801:Humans; D008170:Lung Compliance; D012129:Respiratory Function Tests; D013147:Spirometry; D011795:Surveys and Questionnaires; D013997:Time Factors