1. Robert Wood Johnson Clinical Scholars Program
2. Departments of Pediatrics and Medicine, University of Massachusetts Medical School, Worcester, Massachusetts
3. Department of Biostatistics, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
4. Research Institute, Palo Alto Medical Foundation, Palo Alto, California
5. Johns Hopkins University, School of Arts and Sciences, Baltimore, Maryland
6. Division of Pulmonary and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland