[1] Univ Sheffield, Sheffield, S Yorkshire, England
[2] Policy Anal Inc, Brookline, MA USA
[3] Novartis Pharmaceut UK Ltd, Camberley, England
[4] Novartis Pharmaceut Corp, Florham Pk, NJ USA
[5] Novartis Pharmaceut Corp, E Hanover, NJ USA
[6] Royal Marsden Hosp, London SW3 6JJ, England