1. Responses to isoproterenol in a general population sample;Lorber;Am Rev Respir Dis,1978
2. Clinical interpretation of airway response to a bronchodilator;Dales;Am Rev Respir Dis,1988
3. Reproducibility of spirometric measurements in normal subjects;Dawson;Am Rev Respir Dis,1966
4. McCaffree;Pennock;Changes in measured spirometric indices: what is significant? Chest,1981
5. Clinical pulmonary function testing: a manual of uniform laboratory procedures;Morris,1984