| Affiliation: | 1. Department of Orthopaedic Surgery, Comprehensive Spine Center, UConn Musculoskeletal Institute, University of Connecticut Health Center, Farmington, CT 06030-5353, USA;2. Division of Neurosurgery, Comprehensive Spine Center, University of Connecticut School Health Center, Farmington, CT 06030-5353, USA;1. Department of Orthopaedics, Walter Reed National Military Medical Center, 8901 Wisconsin Ave, Bethesda, MD 20889, USA;2. Department of Surgery, Uniformed Services University of the Health Sciences, 8901 Wisconsin Ave, Bethesda, MD 20889, USA;3. Department of Orthopaedics, Rothman Institute, Thomas Jefferson University, 925 Chestnut St, Philadelphia, PA 19107, USA |
