1. U.S. Department of Health and Human Services, Health Resources and Services Administration, Bureau of Health Professions, Office of Performance Measurement, Rockville, MD
2. U.S. Department of Health and Human Services, Health Resources and Services Administration, Bureau of Health Professions, Divison of Nursing, Rockville, MD
3. U.S. Department of Health and Human Services, Health Resources and Services Administration, Bureau of Health Professions, National Center for Health Workforce Analysis, Rockville, MD
4. Johns Hopkins University School of Nursing, Baltimore, MD