1. Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA, USA
2. Division of Research, Kaiser Permanente Northern California, Oakland, CA, USA
3. Regional Pharmacy, Kaiser Permanente Northern California, Oakland, CA, USA
4. Kaiser Permanente South San Francisco Medical Center, South San Francisco, CA, USA
5. Medical Group Support Services, Kaiser Permanente Northern California, Oakland, CA, USA
6. Kaiser Permanente Oakland Medical Center, Oakland, CA, USA
7. Kaiser Permanente San Rafael Medical Center, San Rafael, CA, USA
8. Kaiser Permanente Sacramento Medical Center, Sacramento, CA, USA
9. Kaiser Permanente Santa Clara Medical Center, Santa Clara, CA, USA
10. Kaiser Permanente Antioch Medical Center, Antioch, CA, USA
11. Kaiser Permanente Walnut Creek Medical Center, Walnut Creek, CA, USA