N.N.A.A. Rahman, D.K.A. Singh, N. M. Sharif, R. Sridharan, and R. Lee. 2019. “QUANTIFICATION OF DIAPHRAGM AND INTERCOSTAL MUSCLE THICKNESS AMONG OLDER ADULTS USING ULTRASOUND IMAGING. A RELIABILITY STUDY”. Malaysian Journal of Industrial Technology 3 (1): 69-74. https://ejournal.unikl.edu.my/index.php/mjit/article/view/561.