1. Department of Primary Care & Department of Continuing Professional Development, University of Oxford, Oxford, UK.
2. Research Institute, Parker University, Dallas, TX.
3. Respiratory Epidemiology and Public Health, Imperial College, London, UK.
4. Department of Epidemiology and Biostatistics, Imperial College, London, UK.
5. Department of Medical and Molecular Genetics, Kings College London, Guy's Hospital, London, UK.
6. Department of Information Systems, Parker University, Dallas, TX.
7. School of Massage Therapy, Parker University, Dallas, TX.