AUTHOR=Abril-Ulloa Sandra Victoria , Carpio-Arias Tannia Valeria , Alvarado-Barba Renata Alejandra , Ríos-Romero Cristina Gabriela , Vinueza-Veloz Pamela , Lima-dos-Santos Sueny Paloma , Astudillo-Skliarova Igor Eduardo , Arias-Gutiérrez Ruth Irene , Pérez-Quintana Manuel , Boele Henk-Jan , Vinueza-Veloz María Fernanda TITLE=Microbiota, parasitic infections and their relationship with nutritional status and neurocognitive functioning in children from Ecuador—Proyecto Guagua: research protocol for a cross-sectional study JOURNAL=Frontiers in Public Health VOLUME=13 YEAR=2025 URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2025.1505780 DOI=10.3389/fpubh.2025.1505780 ISSN=2296-2565