1 University of Pittsburgh Medical Center, Pennsylvania. Electronic address: kamathpd@upmc.edu.
2 University of Pittsburgh School of Medicine, Pennsylvania.
3 University of Pittsburgh Medical Center, Pennsylvania.
4 University of Maryland School of Medicine, Baltimore.
5 Department of Radiation Oncology, University of Pittsburgh School of Medicine/University of Pittsburgh Medical Center Hillman Cancer Center, Pennsylvania.
6 Department of Radiology, Thomas Jefferson University Hospitals, Philadelphia, Pennsylvania.
7 Department of Neurological Surgery, University of Pittsburgh Medical Center, Pennsylvania.
8 Department of Dermatology, University of Pittsburgh Medical Center, Pennsylvania.