Pagani DM, Pacheco FB, Venier NAB, Silva I da L, Richter GK, Luzzatto L, et al. Atypical presentation of secondary syphilis: annular lesions in an elderly patient. Rev. Inst. Med. Trop. São Paulo [Internet]. 2021 Sep. 21 [cited 2024 Apr. 27];63:e68. Available from: https://www.revistas.usp.br/rimtsp/article/view/190815