Ek-Mex, J.E., Segura-Correa, J.C. and Alzina-López, A. 2016. Effect of reduced or increased number of pigs born alive at second farrowing on lifetime productivity of sows in southeastern Mexico. Archivos de Medicina Veterinaria. 48, 2 (Aug. 2016), 243–246. DOI:https://doi.org/10.4067/S0301-732X2016000200016.