E. S. de Almeida, T. Barbieri, E. Guedes, L. Soares, N. Sanches, and L. D. S. Cortez Jr., “ Tuberculosis infection level and tuberculinic convertion after inoculation of intradermic BCG in school children from Botucatu, SP (Brazil) in 1969 ”, Rev. saúde pública, vol. 8, no. 1, pp. 31–41, Mar. 1974, doi: 10.1590/S0034-89101974000100004.