1. Division of Pharmacoepidemiology and Pharmacoeconomics Brigham and Women's Hospital Harvard Medical School Boston Massachusetts USA
2. Office of Medical Policy Center for Drug Evaluation and Research US Food and Drug Administration Silver Spring Maryland USA
3. Division of Biometrics VII Office of Biostatistics Center for Drug Evaluation and Research US Food and Drug Administration Silver Spring Maryland USA
4. Office of Drug Evaluation I Office of New Drugs Center for Drug Evaluation and Research US Food and Drug Administration Silver Spring Maryland USA