William W Hung

Recent trends in chronic disease, impairment and disability among older adults in the United States

Kenneth S Boockvar, J. Ross, A. Siu, 2011, BMC geriatrics.

Cognitive decline among patients with chronic obstructive pulmonary disease.

J. Ross, J. Wisnivesky, A. Siu, 2009, American journal of respiratory and critical care medicine.