ESQUIVEL, Mercedes et al. The Cuban National Child Cohort Study (CNCCS) 1973-2025. Background and Design of the sixth follow-up. Acta Médica, [S. l.], v. 25, 2024. Disponível em: https://revactamedica.sld.cu/index.php/act/article/view/579. Acesso em: 23 feb. 2025.