TY  - RPRT
TI  - Tuberculin conversions: true or false?
AU  - G W Comstock
AU  - S F Woolpert
PY  - 1978
DO  - 10.1164/arrd.1978.118.2.215
UR  - https://pubmed.ncbi.nlm.nih.gov/697172/
ID  - 697172
ER  -