Bassi, D., A. Demonte, L. Cardello, D. Costa, J. Marchini, and A. Borgui-Silva. “Carnitine Improves Exercise Tolerance and Respiratory Muscle Strength in Patients With Chronic Obstructive Pulmonary Disease”. Journal of Respiratory and CardioVascular Physical Therapy, vol. 2, no. 1, Apr. 2014, pp. 20-29, https://periodicos.ufrn.br/revistadefisioterapia/article/view/5067.