Guimarães, C. F.; Meirelles, M. G.; Fernandes, C. B. Placental Efficiency in the Equine Species: Which Factors May Be Related?. Braz. J. Vet. Res. Anim. Sci. 2015, 52 (2), 98-105. https://doi.org/10.11606/issn.1678-4456.v52i2p98-105.