Silveira, P.R.S. da et al. 2014. Genital tract histological and macroscopical observations of gilts culled for anestrus. Pesquisa Agropecuaria Brasileira. 19, 9 (Apr. 2014), 1169–1173. DOI:https://doi.org/10.1590/S1678-3921.pab1984.v19.16106.