1. Glenfield Hospital, University Hospitals of Leicester, Leicester, UK;
2. GSK, London, UK;
3. CompleWare, Iowa City, IA, USA;
4. Colorado Allergy and Asthma Centers PC, Denver, CO, USA;
5. University of Colorado School of Medicine, Aurora, CO, USA;
6. GSK, Research Triangle Park, NC, USA;
7. North Carolina Clinical Research, Raleigh, NC, USA;
8. Firestone Institute for Respiratory Health, Hamilton, ON, Canada;
9. Michael G DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada