Bonadio, I. C.; Schneck, C. A.; Pires, L. G.; Osava, R. H.; Silva, F. M. B. da; Oliveira, S. M. J. V. de; Riesco, M. L. G. Transferring Mothers from a Free-Standing Birth Center to a Reference Hospital. Rev. Esc. Enferm. USP 2011, 45 (6), 1301-1308. https://doi.org/10.1590/S0080-62342011000600004.