An internet-based self-help intervention for the reduction of consumption of ultra-processed products and increase of physical activity in Mexican university population: study protocol for a randomized controlled trial. - González-Cantero, Joel Omar; López-Torres, Leyna Priscila; Alvarado-Avalos, Itzel Refugio; López-Alcaraz, Fátima; Gasca-Suarez, Estefania; Cisneros-Hernández, Adrian Antonio; Valadez, Alexandra; Macías-Espinoza, Fabiola; Dominguez-Rodriguez, Alejandro (Frontiers in nutrition, 2024)