Silveira, Ana Paula C., Luciana G. Sípoli, Viviane S. Augusto, Marcia A. F. Xavier, and Paulo R.B. Evora. “Comparison Among Positive Pressure, Standard Physioterapy and Incentive Spirometry After Cardiac Surgery: Literature Review”. Medicina (Ribeirao Preto) 44, no. 4 (December 30, 2011): 338–346. Accessed June 14, 2026. https://revistas.usp.br/rmrp/article/view/47445.