TY  - RPRT
TI  - Central lymph node changes and progressive massive fibrosis in coalworkers.
AU  - J Leigh
AU  - A N Wiles
PY  - 1987
DO  - 10.1136/thx.42.7.559
UR  - https://pubmed.ncbi.nlm.nih.gov/3438903/
ID  - 3438903
ER  -