@misc{indiciaeca2bb216b514,
  title = {Immunologic study of chronic bronchitis.},
  author = {D J Huang and Y P Xu and B X Hu and R F Chen and S Y Dai},
  year = {1982},
  url = {https://pubmed.ncbi.nlm.nih.gov/6816519/},
  note = {Source identifier: 6816519}
}