1. GSK Research and Development Ltd., Ware, Hertfordshire, United Kingdom.
2. Department of Pulmonary Medicine, University Hospital and University of Antwerp, Belgium.
3. Medicines Discovery and Development, GSK, Stevenage, Hertfordshire, United Kingdom.
4. Respiratory Therapy Area Unit, GSK, Stockley Park West, Middlesex, United Kingdom.
5. GSK, Research Triangle Park, Durham, North Carolina, USA.
6. Synergy Clinical, Langley, Berks, United Kingdom.