M.-C. Wu, C.-K. Hsu, J. Yu-Yun Lee, S.-C. Chao, W.-C. Ko, and H.-M. Sheu, “Erythema Multiforme-Like Secondary Syphilis in a HIV-positive Bisexual Man”, Acta Derm Venereol, vol. 90, no. 6, pp. 647–648, Aug. 2010.