[1] Univ Milano Bicocca, Monza, Italy
[2] Seoul St Marys Hosp, Seoul, South Korea
[3] Univ Texas MD Anderson Canc Ctr, Houston, TX 77030 USA
[4] Univ Klinikum Hamburg Eppendorf, Hamburg, Germany
[5] Univ Klinikum Aachen, Hamburg, Germany
[6] Ukraine Acad Med Sci, Res Ctr Radiat Med, Kiev, Ukraine
[7] Vilnius Univ Hosp, Santarigkio Klin, Vilnius, Lithuania
[8] SMS Med Coll & Hosp, Birla Canc Ctr, Jaipur, Rajasthan, India
[9] Singapore Gen Hosp, Singapore 0316, Singapore
[10] Pfizer Inc, Cambridge, MA USA
[11] Univ Klinikum Aachen, Aachen, Germany