1 Department of Radiation Oncology, Sharett Institute of Oncology, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, POB 12272, 9112002, Jerusalem, Israel. philipb@hadassah.org.il.
2 Department of Radiation Oncology, Sharett Institute of Oncology, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, POB 12272, 9112002, Jerusalem, Israel.
3 Department of Radiation Oncology, Thomas Jefferson University Hospital, Philadelphia, Israel.