Boaretto, M.C., Mendes Ribeiro, J., Netto Ratto, K.M., Soares Madeira Domingues, R.M. and Bastos Dias, M.A. 2003. Humanization of labor and birth care: challenges in implementing a strategic policy. Boletim do Instituto de Saúde - BIS. 30 (Aug. 2003), 31–32.