Yogurt in the diet of the elderly: a preliminary investigation into its effect on the gut ecosystem and lipid metabolism Enrica Canzi, Maria Cristina Casiraghi, Raffaella Zanchi, Raffaella Gandolfi, Annamaria Ferrari, Furio Brighenti, Riccardo Bosia, Anna Crippa, Paolo Maestri, Renata Vesely and Bruna Bianchi Salvadori Lait, 82 6 (2002) 713-723 DOI: 10.1051/lait:2002044