Iyer, A. S., Wells, J. M., Vishin, S., Bhatt, S. P., Wille, K. M., & Dransfield, M. T. (2014). CT Scan-Measured Pulmonary Artery to Aorta Ratio and Echocardiography for Detecting Pulmonary Hypertension in Severe COPD. American College of Chest Physicians.

Iyer, Anand S., J. Michael Wells, Sonia Vishin, Surya P. Bhatt, Keith M. Wille, and Mark T. Dransfield. CT Scan-Measured Pulmonary Artery to Aorta Ratio and Echocardiography for Detecting Pulmonary Hypertension in Severe COPD. American College of Chest Physicians, 2014.

Iyer, Anand S., et al. CT Scan-Measured Pulmonary Artery to Aorta Ratio and Echocardiography for Detecting Pulmonary Hypertension in Severe COPD. American College of Chest Physicians, 2014.