E. S. de Almeida, T. Barbieri, M. Gomes, E. Guedes, and L. Soares, “ Tuberculosis infections and the use of oral and intradermic BCG in school children from Laranjal Paulista, S. Paulo, Brazil ”, Rev. saúde pública, vol. 7, no. 3, pp. 189–197, Sep. 1973, doi: 10.1590/S0034-89101973000300001.