[1] Kings Coll London Acad, Dept Rheumatol, London, England
[2] Inverclyde Royal Hosp, Greenock, Scotland
[3] Pfizer Ltd, Surrey, Herts, England
[4] Abacus Int, Bicester, Oxon, England
[5] Abacus Int, Bicester, Oxon, England
[6] Hlth Econ Res Ctr, Oxford, England