[1] Univ Hosp Mar IMIM, Med Oncol Serv, Barcelona, Spain
[2] Inst Canc Res, Sutton, Surrey, England
[3] Univ Hosp Bristol, Bristol Haematol & Oncol Ctr, Bristol, Avon, England
[4] Univ Hosp Hamburg Eppendorf, Martini Klin, Eppendorf, Germany
[5] Sunnybrook Hlth Sci Ctr, Dept Surg, Toronto, ON M4N 3M5, Canada
[6] Univ Texas MD Anderson Canc Ctr, Dept Radiat Oncol, Houston, TX 77030 USA
[7] Hop Europeen Georges Pompidou, Dept Med Oncol, Paris, France
[8] Univ Coll Dublin, UCD Sch Med & Med Sci, Dublin, Ireland