1. Center for Drug Evaluation and Research, Office of Pharmaceutical Quality, Office of Testing and Research, Division of Product Quality Research Food and Drug Administration Silver Spring MD USA
2. Center for Drug Evaluation and Research, Office of Pharmaceutical Quality, Office of Testing and Research, Division of Pharmaceutical Analysis Food and Drug Administration St Louis MO USA
3. Center for Drug Evaluation and Research, Office of Pharmaceutical Quality, Office of Quality Surveillance, Division of Quality Intelligence II Food and Drug Administration Silver Spring MD USA