Information and Communication Technologies for Ageing Well and e-Health First International Conference, ICT4AgeingWell 2015, Lisbon, Portugal, May 20-22, 2015. Revised Selected Papers - Helfert, Markus 1970-; Holzinger, Andreas 1963-; Ziefle, Martina; Fred, Ana; O'Donoghue, John; Röcker, Carsten (Communications in Computer and Information Science, 2015)