Analysis of the Characteristics and Cytotoxicity of Titanium Dioxide Nanomaterials Following Simulated In Vitro Digestion oleh Ana Bettencourt, Lídia M. Gonçalves, Ana C. Gramacho, Adriana Vieira, Dora Rolo, Carla Martins, Ricardo Assunção, Paula Alvito, Maria João Silva, Henriqueta Louro