[1] Univ Athens, Sch Med, Athens, Greece
[2] Mayo Clin, Scottsdale, AZ USA
[3] Univ Texas MD Anderson Canc Ctr, Houston, TX 77030 USA
[4] Charles Univ Prague, Fac Hosp, Hradec Kralove, Czech Republic
[5] Charles Univ Prague, Fac Med, Hradec Kralove, Czech Republic
[6] Univ Hosp Olomouc, Olomouc, Czech Republic
[7] Fred Hutchinson Canc Res Ctr, 1124 Columbia St, Seattle, WA 98104 USA
[8] Univ Hosp Salamanca IBSAL, Salamanca, Spain
[9] Hadassah Hebrew Univ, Med Ctr, Jerusalem, Israel
[10] Princess Margaret Canc Ctr, Toronto, ON, Canada
[11] Amgen Inc, San Francisco, CA USA
[12] Univ Nantes, Nantes, France
[13] Univ Turin, Turin, Italy