G. L. A. Buarque, F. S. A. Borim, A. L. Neri, M. S. Yassuda, and R. C. de Melo, “Relationships between self-reported dyspnea, health conditions and frailty among Brazilian community- dwelling older adults: a cross-sectional study”, Sao Paulo Med J, vol. 140, no. 3, pp. 356–365, May 2022.