Fernanda Warken Rosa, Aquiles Camelier, Anamaria Mayer, José Roberto Jardim
Rosa FW, Camelier A, Mayer A, Jardim JR. Evaluating physical capacity in patients with chronic obstructive pulmonary disease: comparing the shuttle walk test with the encouraged 6-minute walk test . J Bras Pneumol. 2006;32(2):106-113