London N

Kingsley R. Chin, MD, Nikolas London, MD, Albert O. Gee, MD, and Henry H. Bohlman, MD

Dr. Chin is Assistant Professor, The Spine Surgery Service, Department of Orthopaedic Surgery, Hospital of the University of Pennsylvania and University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania.

Dr. London was a Medical Student, Case Western Reserve University Medical School, Cleveland, Ohio, at the time the paper was written.

Dr. Gee is an Orthopaedic Resident, Department of Orthopaedic Surgery, Hospital of the University of Pennsylvania and University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania.

Dr. Bohlman is Chief, Spine Institute, Division of Orthopaedic Surgery, University Hospitals of Cleveland, Case Western Reserve University, Cleveland, Ohio.

Kingsley R. Chin, MD, Nikolas London, MD, Albert O. Gee, MD, and Henry H. Bohlman, MD

Dr. Chin is Assistant Professor, The Spine Surgery Service, Department of Orthopaedic Surgery, Hospital of the University of Pennsylvania and University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania.

Dr. London was a Medical Student, Case Western Reserve University Medical School, Cleveland, Ohio, at the time the paper was written.

Dr. Gee is an Orthopaedic Resident, Department of Orthopaedic Surgery, Hospital of the University of Pennsylvania and University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania.

Dr. Bohlman is Chief, Spine Institute, Division of Orthopaedic Surgery, University Hospitals of Cleveland, Case Western Reserve University, Cleveland, Ohio.

Kingsley R. Chin, MD, Nikolas London, MD, Albert O. Gee, MD, and Henry H. Bohlman, MD

Dr. Chin is Assistant Professor, The Spine Surgery Service, Department of Orthopaedic Surgery, Hospital of the University of Pennsylvania and University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania.

Dr. London was a Medical Student, Case Western Reserve University Medical School, Cleveland, Ohio, at the time the paper was written.

Dr. Gee is an Orthopaedic Resident, Department of Orthopaedic Surgery, Hospital of the University of Pennsylvania and University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania.

Dr. Bohlman is Chief, Spine Institute, Division of Orthopaedic Surgery, University Hospitals of Cleveland, Case Western Reserve University, Cleveland, Ohio.