Racial and ethnic disparities in asthma medication usage and health-care utilization: data from the National Asthma Survey.
Crocker D, Brown C, Moolenaar R, Moorman J, Bailey C, Mannino D, Holguin F. Racial and ethnic disparities in asthma medication usage and health-care utilization: data from the National Asthma Survey. Chest. 2009 Oct; 136(4):1063-1071.