1. School of Medicine, Pharmacy and Health; Durham University; Stockton-on-Tees UK
2. Research Evaluation Unit; Oxford PharmaGenesis Ltd; Oxford UK
3. Department of Family Medicine; University of Michigan; Ann Arbor MI USA
4. Department of Family Medicine; University of Wisconsin; Eau Claire WI USA
5. Department of Family Medicine; Maastricht University; Maastricht The Netherlands
6. Department of General Practice; First Faculty of Medicine; Charles University in Prague; Prague Czech Republic
7. Department of General Practice; Julius Center for Health Sciences and Primary Care; University Medical Center Utrecht; Utrecht The Netherlands