Article Information
vol. 23 no. 3 456-463
PubMed
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History
- Received June 27, 2002
- Accepted September 11, 2003
- Published online March 1, 2004.
Copyright & Usage
© ERS Journals Ltd
Author Information
- 1Dept of Epidemiology and Public Health, Royal Free and University College Medical School, London, UK. 2Statistical Methodology R&D, Statistics Finland, Helsinki, Finland. 3Survey Methods Unit, National Centre for Social Research, London, UK
- E. Falaschetti, Dept of Epidemiology and Public Health, Royal Free and University College Medical School, 1–19 Torrington Place, London, WC1E 6BT, UK. Fax: 44 2078130280. E‐mail: e.falaschetti@public-health.ucl.ac.uk