1. Division of Nonprescription Drug Products, Office of Drug Evaluation IV, Office of New Drugs Center for Drug Evaluation and Research, Food and Drug Administration Silver Spring Maryland
2. Division of Radiological Health, Office of In Vitro Diagnostics and Radiological Health Center for Devices and Radiological Health, Food and Drug Administration Silver Spring Maryland
3. Division of Biomedical Physics, Office of Science and Engineering Laboratories Center for Devices and Radiological Health, Food and Drug Administration Silver Spring Maryland