Obstructive Lung Disease: COPD and Asthma QuizQuiz
A 58-year-old woman complains of a chronic productive cough lasting for several months each year. She has no history of asthma. Which criterion confirms a diagnosis of chronic bronchitis?
B.Cough for 6 months a year for two consecutive years
C.Cough for 3 months in a single year
D.Cough for 3 months a year for two consecutive years