V. A. F. Alves, S. A. C. Siqueira, and C. B. . Pestana, “Pathology of leptospirosis, A critical analysis of morphological and immunohistochemical features relevant to pathogenesis of systemic lesion”, Rev Inst Adolfo Lutz, vol. 49, no. 1, pp. 75–80, Jun. 1989.