Barriers to physical activity in patients with intermittent claudication - Barbosa, João Paulo; Farah, Breno Quintella; Chehuen, Marcel; Cucato, Gabriel Grizzo; Farias Júnior, José Cazuza; Wolosker, Nelson; Forjaz, C. L. M.; Gardner, Andrew W; Ritti-Dias, Raphael Mendes (International journal of behavioral medicine, 2015)