The Nutritional Status of Long-Term Institutionalized Older Adults Is Associated with Functional Status, Physical Performance and Activity, and Frailty oleh Itxaso Mugica-Errazquin, Idoia Zarrazquin, Jesús Seco-Calvo, Javier Gil-Goikouria, Ana Rodriguez-Larrad, Janire Virgala, Nagore Arizaga, Beatriz Matilla-Alejos, Jon Irazusta, Maider Kortajarena