TY - RPRT TI - Delayed hypersensitivity drug reactions diagnosed by patch testing. AU - J M Calkin AU - H I Maibach PY - 1993 DO - 10.1111/j.1600-0536.1993.tb03555.x UR - https://pubmed.ncbi.nlm.nih.gov/8112060/ ID - 8112060 ER -