Weight loss severity and functional decline among the oldest old in a middle-income country: the fibra study longitudinal findings - Corona, Ligiana Pires; Andrade, Flávia Cristina Drumond; Borim, Flávia Silva Arbex; Aprahamian, Ivan; Fattori, André; Cesari, Matteo; Neri, Anita Liberalesso; Yassuda, Monica Sanches (Clinical Nutrition ESPEN: the European e-journal of clinical nutrition and metabolism, 2023)