1. Does postnasal drip cause cough?;Landau;Clin Notes Respir Dis,1979
2. Postnasal drip and chronic cough;Phelan;Lancet,1978
3. Postnasal drip and cough;Irwin;Clin Notes Respir Dis,1980
4. Chronic persistent cough in the adult: the spectrum and frequency of causes and successful outcome of specific therapy;Irwin;Am Rev Respir Dis,1981
5. Cough as a symptom;Clerf;Med Clin North Am,1947