Weakness or softness of the cartilage in the walls of the bronchial tubes. [ http://www.ncbi.nlm.nih.gov/pubmed/15764786 ]
This is just here as a test because I lose it
Weakness or softness of the cartilage in the walls of the bronchial tubes. [ http://www.ncbi.nlm.nih.gov/pubmed/15764786 ]