Jul 5, 2016 ... The ELS procedure was implemented based on Rice et al. .... litter were removed
from the USV vs. entry time point analysis only. ..... et al., 1978; Leon et al., 1978;
Woodside et al., 1980; Stern and Azzara, 2002; Stern and Keer, 2002). ..... Rohr S
., Dufour B. D., Gaskill B. N., Pajor E. A., Garner J. P. (2008).