Socioeconomic status, race and COPD health outcomes
M D Eisner, P D Blanc, T A Omachi, E H Yelin, S Sidney, P P Katz, L M Ackerson, G Sanchez, Irina Tolstykh, C Iribarren
Journal of Epidemiology & Community Health Jan 2011, 65 (1) 26-34; DOI: 10.1136/jech.2009.089722