Beyond appearance: An unusual manifestation of isolated oral secondary syphilis. - Mari E; Nudo M; Palese E; Cotticelli L; Cotticelli C; Zino G; Coppola R; Di Lella FM; Arcari G; Rodio DM; Prezioso C; Pietropaolo V; et al. (International journal of immunopathology and pharmacology, 2019)