| Affiliation: | 1. Kushiro Kojinkai Memorial Hospital Spine Center, Kushiro, Japan;2. Department of Neurosurgery, Kushiro Kojinkai Memorial Hospital, Kushiro, Japan;1. Spine Center, Kushiro Kojinkai Memorial Hospital Spine Center, Kushiro, Japan;2. Department of Neurosurgery, Kushiro Kojinkai Memorial Hospital Spine Center, Kushiro, Japan;1. Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA;2. Department of Neurological Surgery, Keck School of Medicine, University of Southern California, Los Angeles, California, USA |
