Friedrich, F., Filippis, A.M.B. and Schatzmayr, H.G. (1995) “ Sabin-related poliovirus vaccine strains isolated from transverse myelitis cases in Brazil ”, Revista do Instituto de Medicina Tropical de São Paulo, 37(6), pp. 543–545. Available at: https://revistas.usp.br/rimtsp/article/view/29326 (Accessed: 26 June 2024).