Nazir, Arnengsih. “Preoperative Inspiratory Muscle Training in Patients Undergoing Coronary Artery Bypass Graft Surgery: A Practical Guidance for Rehabilitation Physicians”. Indonesian Journal of Physical Medicine and Rehabilitation 13, no. 2 (December 28, 2024): 135 - 149. Accessed February 9, 2025. https://indojournalpmr.org/IndoJPMR/article/view/407.