TY  - RPRT
TI  - Letter: Comparative tuberculin reactions.
AU  - T H Rea
AU  - R Seltzer
AU  - N E Levan
PY  - 1974
DO  - 10.1001/jama.229.9.1165b
UR  - https://pubmed.ncbi.nlm.nih.gov/4407920/
ID  - 4407920
ER  -