Tokyo Women's Medical University - Department of Neurology, Kyoto Katsura Hospital, Fukuoka University, Fukuoka University, Fukuzumi Hospital, Institute of Brain and Blood Vessel Mihara Memorial Hospital, Hanyu General Hospital, Nakamura Memorial Hospital, National Cerebral and Cardiovascular Centre - Department of Cerebrovascular Medicine, University of Ryukyu, Osaka University, University of Ryukyu, Jichi Medical University, Ryukyu School of Medicine, National Hospital Organization Kyushu Medical Center - Departments of Cerebrovascular Medicine and Neurology, Iwatsuki-Minami Hospital, Saitama University - Saitama Medical Center, Cardio-Renal and Health Research Institute, Yokohama Rosai Hospital, Sakai City Medical Center, Japan Health Care College, Tohoku University - Division of Nephrology, Endocrinology and Vascular Medicine, Keio University, Shin-Oyama City Hospital and Independent