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