TY  - RPRT
TI  - Protection against tuberculosis.
AU  - A P Belmont
AU  - R Gardiner
AU  - W W Stead
PY  - 1968
DO  - 10.1056/nejm196801112780214
UR  - https://pubmed.ncbi.nlm.nih.gov/5634479/
ID  - 5634479
ER  -