Virtual Coaches for Older Adults' Wellbeing: A Systematic Review. - Mira El Kamali; Leonardo Angelini; Maurizio Caon; Francesco Carrino; Christina Röcke; Sabrina Guye; Giovanna Rizzo; Alfonso Mastropietro; Martin Sykora; Suzanne Elayan; Isabelle Kniestedt; Canan Ziylan; et al. (IEEE Access, 2020)