Effectiveness and cost-effectiveness of personalised dietary advice aiming at increasing protein intake on physical functioning in community-dwelling older adults with lower habitu... oleh Ilse Reinders, Hanneke A H Wijnhoven, Satu K Jyväkorpi, Merja H Suominen, Riikka Niskanen, Kristien S Fluitman, Michel C A Klein, Lothar D Kuijper, Laura M van der Lubbe, Margreet R Olthof, Kaisu H Pitkälä, Rachel Vijlbrief