TY - RPRT TI - Pyoderma gangrenosum and malignant pyoderma in Nigeria. AU - O E Obasi PY - 1991 DO - 10.1111/j.1365-2230.1991.tb00291.x UR - https://pubmed.ncbi.nlm.nih.gov/2025931/ ID - 2025931 ER -