8Irwin RS, Curley FJ, Frech CK Chronic cough. The spectrum and frequency of causes, key components of the diagnostic evaluation, and outcome of specific therapy. Am Rev Respir Dis, 1990, 141:640-647.
9Palombini BC, Villanova AC, Araujo E, et al. A pathogenic triad in chronic cough: Asthma, postnasal drip syndrome, and gastroesophageal reflux disease. Chest, 1999, 116:279-284.
10Irwin RS, Boule LP, Cloutier MM, et al. Managing cough as a defense mechanism and as a symptom. A consensus panel report of the American College of Chest Physicians. Chest, 1998, 114 (2 Suppl Managing ) : 133 S-181 S.
