[1] Canc Therapy & Res Ctr S Texas, San Antonio, TX 78229 USA
[2] Royal Marsden Hosp, London SW3 6JJ, England
[3] Dana Farber Canc Inst, Boston, MA 02115 USA
[4] Catholic Univ Louvain, B-3000 Louvain, Belgium
[5] Univ PA, Sch Med, Philadelphia, PA USA
[6] Novartis, E Hanover, NJ USA
[7] Univ Frankfurt, D-6000 Frankfurt, Germany