Is a Non-Caloric Sweetener-Free Diet Good to Treat Functional Gastrointestinal Disorder Symptoms? A Randomized Controlled Trial oleh Viridiana Montsserrat Mendoza-Martínez, Mónica Rocío Zavala-Solares, Aranza Jhosadara Espinosa-Flores, Karen Lorena León-Barrera, Raúl Alcántara-Suárez, José Damián Carrillo-Ruíz, Galileo Escobedo, Ernesto Roldan-Valadez, Marcela Esquivel-Velázquez, Guillermo Meléndez-Mier, Nallely Bueno-Hernández