TY  - RPRT
TI  - Smoking and immunity.
AU  - P G Holt
AU  - W R Thomas
AU  - D Keast
PY  - 1973
DO  - 10.1016/s0140-6736(73)91327-5
UR  - https://pubmed.ncbi.nlm.nih.gov/4126100/
ID  - 4126100
ER  -