Mellado, Miguel, Omar Nájera, Jesús Mellado, José E. García, Ulises Macías-Cruz, Álvaro F. Rodríguez, Cesar A. Meza-Herrera, and Leonel Avendaño-Reyes. 2021. “Vaccination Programs, Parity, and Calving Season As Factors Affecting the Risk of Fetal Losses and Mummified Fetuses in Holstein Cows”. Spanish Journal of Agricultural Research 19 (3), e0402. https://doi.org/10.5424/sjar/2021193-16690.