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Spectrum and frequency of causes of wheezing

Spectrum and frequency of causes of wheezing
Spectrum and frequency of causes of wheeze in patients referred to a pulmonary clinic.
PNDS: postnasal drip syndrome.
Data from: Pratter MR, Hingston DM, Irwin RS. Diagnosis of bronchial asthma by clinical evaluation: An unreliable method. Chest 1983; 84:4.
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