1. The Center for Health Research; Kaiser Permanente; Portland; Oregon; USA
2. Center for Outcomes and Evidence; Agency for Healthcare Research and Quality; Rockville; Maryland; USA
3. Division of Geriatric Medicine; University of Massachusetts Medical School; Worcester; Massachusetts; USA
4. Center for Health Care Research; Baylor Health Care System; Dallas; Texas; USA
5. Institute for Health, Health Care Policy, and Aging Research; Rutgers University; New Brunswick; New Jersey; USA
6. Office of Surveillance and Epidemiology; Food and Drug Administration; Silver Spring; Maryland; USA
7. Salt Lake City IDEAS Center; Veterans Affairs Salt Lake City Health Care System; Salt Lake City; Utah; USA
8. Department of Pharmacy Practice; University of Illinois at Chicago School of Pharmacy; Chicago; Illinois; USA
9. Division of Outcomes and Effectiveness Research; Weill Cornell Medical College; New York; New York; USA
10. Department of Epidemiology; University of North Carolina, Gillings School of Global Public Health; Chapel Hill; North Carolina; USA
11. Health, Social and Economics Research; Research Triangle Institute International; Research Triangle Park; North Carolina; USA
12. Division of Pharmacoepidemiology and Pharmacoeconomics; Brigham & Women's Hospital, Harvard Medical School; Boston; Massachusetts; USA