Which of the following conditions causes constriction of the bronchial airways by bronchospasms?
a. diphtheria
b. pertussis
c. croup
d. asthma
Answer: B
Which of the following conditions causes constriction of the bronchial airways by bronchospasms?
a. diphtheria
b. pertussis
c. croup
d. asthma
Answer: B
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