Reliability, validity, interpretability and responsiveness of the DEMMI mobility index for Brazilian older hospitalized patients - Tavares, Lucas Spadoni; Moreno, Nayara Alexia; Aquino, Bruno Garcia de; Costa, Larissa Francielly; Giacomassi, Ivens Willians Silva; Simoes, Maria do Socorro Morais Pereira; Lunardi, Adriana Claudia (PLOS ONE, 2020)