@misc{indiciae06dad23ef555, title = {IgA subclasses in sputum from patients with bronchiectasis.}, author = {D Burnett and S L Hill and A R Bradwell and R A Stockley}, year = {1990}, doi = {10.1016/s0954-6111(08)80014-5}, url = {https://pubmed.ncbi.nlm.nih.gov/2371433/}, note = {Source identifier: 2371433} }