Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center. Division of Stroke Care Unit, National Cerebral and Cardiovascular Center. Department of Cerebrovascular Medicine and Neurology, Clinical Research Institute, National Hospital Organization Kyushu Medical Center. Center for Clinical Research, Kobe University Hospital. Department of Clinical Neuroscience and Therapeutics, Hiroshima University Graduate School of Biomedical and Health Sciences. Foundation for Biomedical Research and Innovation, Translational Research Informatics Center. Division of Biostatistics and Clinical Epidemiology, University of Toyama Graduate School of Medicine and Pharmaceutical Science. Department of Neurosurgery and Stroke Center, Nakamura Memorial Hospital. Department of Neurology, Kyorin University Hospital. Stroke Center, Kinki University. Department of Neurology, Tokyo Women's Medical University. Clinical Research Center, International University of Health and Welfare, Center for Brain and Cerebral Vessels, Sanno Hospital and Sanno Medical Center. Japan Community Healthcare Organization (JCHO) Hoshigaoka Medical Center.