1. Center for Clinical Epidemiology and Biostatistics, Department of Biostatistics, Epidemiology, and Informatics; Perelman School of Medicine at the University of Pennsylvania; Philadelphia PA USA
2. Center for Pharmacoepidemiology Research and Training, Department of Biostatistics, Epidemiology, and Informatics; Perelman School of Medicine at the University of Pennsylvania; Philadelphia PA USA
3. Division of Infectious Diseases, Department of Medicine; Perelman School of Medicine at the University of Pennsylvania; Philadelphia PA USA
4. Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine; Perelman School of Medicine at the University of Pennsylvania; Philadelphia PA USA
5. HealthCore, Inc.; Andover MA USA
6. QuintilesIMS; London UK
7. Clinical Practice Research Database; London UK
8. Rutgers Biomedical and Health Sciences, Rutgers; The State University of New Jersey; Newark NJ USA