[1] Univ N Carolina, Chapel Hill, NC 27515 USA
[2] Univ Turin, I-10124 Turin, Italy
[3] Hosp Germans Trias & Pujol, Barcelona, Spain
[4] Johns Hopkins Univ, Sch Med, Baltimore, MD USA
[5] Washington Univ, Sch Med, St Louis, MO USA
[6] Univ Pittsburgh, Sch Med, Pittsburgh, PA 15260 USA
[7] SE Med Oncol, Goldsboro, NC USA
[8] Univ Virginia, Charlottesville, VA USA
[9] Hosp San Pablo, Barcelona, Spain
[10] Pfizer, La Jolla, CA USA