[1]
C. Ciari Jr., J. L. F. Santos, and E. A. de Castilho, “ The required for concepcion: it’s relation to the oral hormonal contraceptive ”, Rev. saúde pública, vol. 6, no. 3, pp. 273–281, Sep. 1972, doi: 10.1590/S0034-89101972000300006.