@misc{indiciaea9e787e178d2,
  title = {[Epidemiological study of chronic bronchitis].},
  author = {A I Ziugzda and M A Staponkiene and R I Peskeviciene},
  year = {1978},
  url = {https://pubmed.ncbi.nlm.nih.gov/739749/},
  note = {Source identifier: 739749}
}