7Palombini BC, Villanova CA, Araujo E. A pathogenic triad in chronic cough: asthma, postnasal drip syndrome and gastroesophageal reflux disease [J]. Chest, 1999, 116: 279-284.
8Irwin RS, Curley FJ, French CL. Chronic cough: the spectrum and frequency of causes, key components of the diagnostic evaluation, and outcome of specific therapy [J]. Am Rev Respir Dis,1990, 141:640-647.
9KF Chung, UG Lalloo. Diagnosis and management of chronic persistent dry cough [J]. Postgrad. Med J, 1996, 72: 594-598.
10Richard S, Irwin J, Mark M. The diagnosis and treatment of cough [J]. N Engl J Med, 2000, 343:1715 -1721.
