Prebiotic supplementation in frail older people affects specific gut microbiota taxa but not global diversity oleh Tam T. T. Tran, Fabien J. Cousin, Denise B. Lynch, Ravi Menon, Jennifer Brulc, Jillian R.-M. Brown, Eileen O’Herlihy, Ludovica F. Butto, Katie Power, Ian B. Jeffery, Eibhlís M. O’Connor, Paul W. O’Toole