Mulyo, Agatha Narinda D., Vitriana Biben, and Tertianto Prabowo. “Thorax Expansion and Its Correlation to Spirometry”. Indonesian Journal of Physical Medicine and Rehabilitation 4, no. 01 (June 16, 2017): 5-12. Accessed January 17, 2026. https://indojournalpmr.org/IndoJPMR/article/view/32.