TY  - RPRT
TI  - Patch testing in penicillin allergy.
AU  - W G van Ketel
PY  - 1975
DO  - 10.1111/j.1600-0536.1975.tb05407.x
UR  - https://pubmed.ncbi.nlm.nih.gov/139236/
ID  - 139236
ER  -