1. Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA
2. VA Outcomes Group, White River Junction, Vermont, USA
3. The Dartmouth Institute for Health Policy & Clinical Practice, Lebanon, New Hampshire, USA
4. Biomedical Libraries at Dartmouth, Hanover, New Hampshire, USA
5. University of Cambridge, Cambridge, United Kingdom
6. University of Oxford, Oxford, United Kingdom