Relationships between self-reported dyspnea, health conditions and frailty among Brazilian communitydwelling older adults: a cross-sectional study - Buarque, Giselle Layse Andrade; Borim, Flávia Silva Arbex; Neri, Anita Liberalesso; Yassuda, Mônica Sanches; Melo, Ruth Caldeira de (Sao Paulo Medical Journal, 2022)