C. S. Boccolini, M. L. de Carvalho, M. I. C. de Oliveira, and A. G. G. Vasconcellos, “ Factors associated with breastfeeding in the first hour of life ”, Rev. saúde pública, vol. 45, no. 1, pp. 69–78, Feb. 2011, doi: 10.1590/S0034-89102010005000051.