TY  - RPRT
TI  - Pathogenic bacteria in chronic bronchitis.
AU  - J R MAY
PY  - 1954
DO  - 10.1016/s0140-6736(54)91931-5
UR  - https://pubmed.ncbi.nlm.nih.gov/13213049/
ID  - 13213049
ER  -