@misc{indiciae870217c98bc7, title = {Variation in sensitivity to tuberculin.}, author = {J Katz and S Kunofsky and A Krasnitz}, year = {1972}, doi = {10.1164/arrd.1972.106.2.202}, url = {https://pubmed.ncbi.nlm.nih.gov/5049653/}, note = {Source identifier: 5049653} }