VISHNU VARDHAN, TUSHAR PALEKAR, and RANE VIVEK SUDHAKAR. “Reliability and Validity of Real Time Chest Expansion (RTCEX) Device to Measure Chest Expansion With Visual Feedback”. International Journal of Pharma and Bio Sciences 8, no. 3 (September 30, 2017): 989–994. Accessed July 2, 2026. https://ijpbs.net/index.php/journal/article/view/6159.