Institution: | a Stanford University Department of Orthopaedic Surgery, Spinal Surgery Section, Stanford University School of Medicine, 300 Pasteur Drive, Stanford University Hospitals and Clinics, Room R171, Stanford, CA 94305, USA b Stanford University Department of Orthopaedic Surgery, Stanford University School of Medicine, 300 Pasteur Drive, Stanford University Hospitals and Clinics, Room R171, Stanford, CA 94305, USA |