TY - RPRT TI - Squamous cell carcinoma occurring in chronic perianal pyoderma. AU - B Sundell AU - C Möller PY - 1969 DO - 10.1016/s0007-1226(69)80143-8 UR - https://pubmed.ncbi.nlm.nih.gov/4902100/ ID - 4902100 ER -