[1] University of Alabama at Birmingham,Department of Epidemiology, School of Public Health
[2] University of Alabama at Birmingham,Division of Pulmonary, Allergy, and Critical Care Medicine
[3] University of Alabama at Birmingham Lung Health Center,Department of Pharmacy
[4] Birmingham VA Medical Center,Department of Biostatistics, School of Public Health
[5] University of Alabama at Birmingham Hospital,Division of Infectious Diseases
[6] University of Alabama at Birmingham,undefined
[7] University of Alabama at Birmingham School of Medicine,undefined