Cognitive and Emotional Effect of a Multi-species Probiotic Containing Lactobacillus rhamnosus and Bifidobacterium lactis in Healthy Older Adults: A Double-Blind Randomized Placebo-Controlled Crossover Trial. - Ruiz-Gonzalez C; Cardona D; Rueda-Ruzafa L; Rodriguez-Arrastia M; Ropero-Padilla C; Roman P (Probiotics and antimicrobial proteins, 2025)