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Dino Samartzis, DSc, MSc, Rex A. W. Marco, MD, Louis G. Jenis, MD, Nitin Khanna, MD, Robert J. Banco, MD, Edward J. Goldberg, MD, and Howard S. An, MD

Dr. Samartzis is with the Department of Epidemiology, Radiation Effects Research Foundation, Hiroshima, Japan, and Beebe Fellow and Scholar, National Academies, Washington, D.C.

Dr. Marco is Associate Professor, Department of Orthopaedic Surgery and Department of Neurosurgery, and Chief of Spine Surgery and Musculoskeletal Oncology, University of Texas Medical School, Houston, Texas.

Dr. Jenis is Clinical Associate Professor, Orthopaedic Surgery, Tufts University School of Medicine, and with Boston Spine Group and New England Baptist Hospital, Boston, Massachusetts.

Dr. Khanna is Spine Surgeon, Orthopaedic Specialists of Northwest Indiana, Munster, Indiana.

Dr. Banco is Assistant Clinical Professor, Tufts University School of Medicine, and Chief, Spine Section, Department of Orthopaedic Surgery, New England Baptist Hospital, Boston, Massachusetts.

Dr. Goldberg is Assistant Professor, Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois.

Dr. An is the Morton International Professor of Orthopaedic Surgery and Director of the Division of Spine Surgery and Spine Fellowship, Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois.

Dino Samartzis, DSc, MSc, Rex A. W. Marco, MD, Louis G. Jenis, MD, Nitin Khanna, MD, Robert J. Banco, MD, Edward J. Goldberg, MD, and Howard S. An, MD

Dr. Samartzis is with the Department of Epidemiology, Radiation Effects Research Foundation, Hiroshima, Japan, and Beebe Fellow and Scholar, National Academies, Washington, D.C.

Dr. Marco is Associate Professor, Department of Orthopaedic Surgery and Department of Neurosurgery, and Chief of Spine Surgery and Musculoskeletal Oncology, University of Texas Medical School, Houston, Texas.

Dr. Jenis is Clinical Associate Professor, Orthopaedic Surgery, Tufts University School of Medicine, and with Boston Spine Group and New England Baptist Hospital, Boston, Massachusetts.

Dr. Khanna is Spine Surgeon, Orthopaedic Specialists of Northwest Indiana, Munster, Indiana.

Dr. Banco is Assistant Clinical Professor, Tufts University School of Medicine, and Chief, Spine Section, Department of Orthopaedic Surgery, New England Baptist Hospital, Boston, Massachusetts.

Dr. Goldberg is Assistant Professor, Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois.

Dr. An is the Morton International Professor of Orthopaedic Surgery and Director of the Division of Spine Surgery and Spine Fellowship, Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois.

Dino Samartzis, DSc, MSc, Rex A. W. Marco, MD, Louis G. Jenis, MD, Nitin Khanna, MD, Robert J. Banco, MD, Edward J. Goldberg, MD, and Howard S. An, MD

Dr. Samartzis is with the Department of Epidemiology, Radiation Effects Research Foundation, Hiroshima, Japan, and Beebe Fellow and Scholar, National Academies, Washington, D.C.

Dr. Marco is Associate Professor, Department of Orthopaedic Surgery and Department of Neurosurgery, and Chief of Spine Surgery and Musculoskeletal Oncology, University of Texas Medical School, Houston, Texas.

Dr. Jenis is Clinical Associate Professor, Orthopaedic Surgery, Tufts University School of Medicine, and with Boston Spine Group and New England Baptist Hospital, Boston, Massachusetts.

Dr. Khanna is Spine Surgeon, Orthopaedic Specialists of Northwest Indiana, Munster, Indiana.

Dr. Banco is Assistant Clinical Professor, Tufts University School of Medicine, and Chief, Spine Section, Department of Orthopaedic Surgery, New England Baptist Hospital, Boston, Massachusetts.

Dr. Goldberg is Assistant Professor, Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois.

Dr. An is the Morton International Professor of Orthopaedic Surgery and Director of the Division of Spine Surgery and Spine Fellowship, Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois.