1. Department of PediatricsUniversity of Vermont College of Medicine Burlington Vermont
2. Medical Biostatistics UnitUniversity of Vermont College of Medicine Burlington Vermont
3. Jeffords Institute for QualityUniversity of Vermont Medical Center Burlington Vermont
4. Occupational Health Program, Department of MedicineUniversity of Maryland School of Medicine Baltimore Maryland
5. U.S. Department of Veterans Affairs Washington District of Columbia
6. Department of PathologyUniversity of Vermont College of Medicine Burlington Vermont