1. Doctorado en Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana, Ciudad de México C.P. 3855, Mexico
2. Department of Biology of Reproduction, Division of Biological and Health Sciences, Universidad Autónoma Metropolitana, Unidad Iztapalapa, Ciudad de México C.P. 09310, Mexico
3. Program in Genetic Resources and Productivity-Livestock, Campus Montecillo, Colegio de Postgraduados, Montecillo, Texcoco C.P. 56264, Mexico
4. Program in Innovation in Natural Resources Management, Campus San Luis Potosí, Colegio de Postgraduados, Salinas de Hidalgo, San Luis Potosí C.P. 78600, Mexico