Singer, J., Yelin, E. H., Katz, P. P., Sanchez, G., Iribarren, C., Eisner, M. D., & Blanc, P. D. (2011). Respiratory and skeletal muscle strength in COPD: Impact on exercise capacity and lower extremity function.

Singer, Jonathan, Edward H. Yelin, Patricia P. Katz, Gabriela Sanchez, Carlos Iribarren, Mark D. Eisner, và Paul D. Blanc. Respiratory and Skeletal Muscle Strength in COPD: Impact On Exercise Capacity and Lower Extremity Function. 2011.

Singer, Jonathan, et al. Respiratory and Skeletal Muscle Strength in COPD: Impact On Exercise Capacity and Lower Extremity Function. 2011.