Herazo Chamorro, M. I. .; Pérez Vásquez, D. A. .; Bolaños-Torres, B. I. .; Fonseca Beltrán, L. D. .; Romero-Acosta, K. C. . Internalized and Externalized Problems in Preschoolers and Emotional State of Caregivers During the COVID-19 Pandemic: A Longitudinal Study. Gac Méd Caracas 2023, 131.