1. Scientific Consultant, Hunstanton, Norfolk, United Kingdom.
2. Department of Medicine, Department of Pulmonary Disease, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
3. Nuclear Medicine Department, Royal Brompton Hospital, Sydney Street, London, United Kingdom.
4. School of Paediatrics and Child Health, University of Western Australia, Perth, Western Australia, Australia.
5. Faculty of Sciences, Michael de Groote School of Medicine, McMaster University, Hamilton, Ontario, Canada.
6. University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom.
7. Inamed GmbH, Gauting, Germany.
8. Lovelace Respiratory Research Institute, Albuquerque, New Mexico.
9. Johns Hopkins University School of Medicine, Baltimore, Maryland.
10. Cardiff Scintigraphics and Welsh School of Pharmacy, Cardiff, United Kingdom.
11. Airway Disease Section, National Heart and Lung Institute, Imperial College London and Royal Brompton Hospital, London, United Kingdom.
12. Center for Environmental Medicine, Asthma and Lung Biology, University of North Carolina, Chapel Hill, North Carolina.