[1] Hosp Clin Barcelona, Med Oncol Serv, ES-08036 Barcelona, Spain
[2] Univ Rome, Dipartimento Med Sperimentale & Patol, Rome, Italy
[3] Penn Hosp, Philadelphia, PA 19107 USA
[4] John Radcliffe Hosp, Oxford OX3 9DU, England
[5] Stobhill Gen Hosp, Glasgow G21 3UW, Lanark, Scotland
[6] Osped S Andrea, La Spezia, Italy
[7] Klin Bayreuth, Bayreuth, Germany
[8] Beth Israel Med Ctr, New York, NY 10003 USA
[9] Christie Hosp NHS Trust, Manchester M20 4BX, Lancs, England