A. Toledo, A. Borghi-Silva, L. M. M. Sampaio, K. P. Ribeiro, V. Baldissera, and D. Costa, “ The impact of noninvasive ventilation during the physical training in patients with moderate-to-severe chronic obstructive pulmonary disease (COPD) ”, Clinics, vol. 62, no. 2, pp. 113–120, Jan. 2007, doi: 10.1590/S1807-59322007000200004.