1 Department of Radiation Oncology, Keck School of Medicine, University of Southern California, Los Angeles, California.
2 Keck School of Medicine, University of Southern California, Los Angeles, California.
3 Division of Plastic and Reconstructive Surgery, Keck School of Medicine, University of Southern California, Los Angeles, California.
4 Allegheny General Hospital, Allegheny Health Network Cancer Center, Pittsburgh, Pennsylvania.
5 Department of Radiation Oncology, Keck School of Medicine, University of Southern California, Los Angeles, California. Electronic address: Diane.Ling@med.usc.edu.