Gut microbiota and its association with gastrointestinal symptoms and pharmacological treatments in a sibling-matched cohort with autism spectrum disorder. - Peñalba, Florencia; Guisande, Andreina; Lamberti, Lucía; Rusiñol, Camila; Irastorza, Maite; Konik, Florencia; Iglesias, Claudio; Mendive, Paula; Garrido, Gabriela; Parada, Andrés; Riera, Nadia (Frontiers in Microbiomes, 2026)