1. Department of Medicine, University of Washington , Seattle, Washington , USA
2. College of Pharmacy, University of Manitoba , Winnipeg, Manitoba , Canada
3. Department of Medicine, University of California , San Diego, California , USA
4. Department of Medicine, University of Alabama , Birmingham, Alabama , USA
5. Department of Medicine, Johns Hopkins University , Baltimore, Maryland , USA
6. Department of Medicine, University of North Carolina , Chapel Hill, North Carolina , USA
7. Fenway Health Institute and Harvard Medical School , Boston, Massachusetts , USA
8. Department of Medicine, Case Western Reserve University , Cleveland, Ohio , USA
9. Department of Medicine, University of California , San Francisco, California , USA
10. Department of Epidemiology and Biostatistics, University of California , San Francisco, California , USA