1. Division of Pharmaceutical Analysis, Center for Drug Evaluation and Research, US Food and Drug Administration, 1114 Market Street, Room 1002, Saint Louis, MO 63101 USA
2. Office of Testing and Research, Center for Drug Evaluation and Research, US Food and Drug Administration, White Oak CDER Office Building #22, Suite 2130, 10903 New Hampshire Avenue, Silver Spring, MD 20993 USA