@misc{indiciae3d9bdf03f400, title = {Tuberculin skin testing.}, author = {J N Longfield and A M Margileth and D F Cruess}, year = {1997}, doi = {10.7326/0003-4819-127-4-199708150-00021}, url = {https://pubmed.ncbi.nlm.nih.gov/9265441/}, note = {Source identifier: 9265441} }