| Affiliation: | 1. Department of Radiation Oncology, UT Southwestern, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA;2. Department of Radiation Oncology, Thomas Jefferson University, 111 South 11th Street, Philadelphia, PA 19107, USA;1. Department of Radiation Oncology, University of California-San Francisco, 1600 Divisadero Street, H1031, San Francisco, CA 94143-1708, USA;2. Division of Head and Neck Surgical Oncology, Department of Otolaryngology-Head and Neck Surgery, University of California-San Francisco, 550 16th Street, Box 3213, San Francisco, CA 94158, USA;1. Department of Radiation Oncology, Drexel University College of Medicine, 245 North 15 Street, Philadelphia, PA 19102, USA;2. Department of Radiation Oncology, Christiana Care, 4701 Ogletown-Stanton Rd, Newark, DE 19713, USA;1. Division of Radiation Oncology, University of South Alabama Mitchell Cancer Institute, 1660 Spring Hill Avenue, Mobile, AL 36604, USA;2. Department of Radiation Oncology, Vanderbilt University Medical Center, 2220 Pierce Avenue, Preston Research Building B-1003, Nashville, TN 37232, USA |
