1. Spirometry: a key diagnostic test in pulmonary medicine;Stoller;Cleveland Clin J Med,1992
2. Obstructing lesions of the larynx and trachea: clinical and physiologic characteristics;Miller;Mayo Clin Proc,1969
3. Response to exercise in upper airway obstruction;Al-Bazzaz;Am Rev Respir Dis,1975
4. Detection of upper airway obstruction with spirometry results and the flow-volume loop: a comparison of quantitative and visual inspection criteria;Modrykamien;Respir Care,2009
5. Clinical and lung-function variables associated with vocal cord dysfunction;Watson;Respir Care,2009