∗Department of Orthopaedic Surgery, Hokkaido University Hospital, Hokkaido, Japan
†Department of Advanced Medicine for Spine and Spinal Cord Disorders, Faculty of Medicine and Graduate of Medicine, Hokkaido University, Hokkaido, Japan
‡Eniwa Hospital, Hokkaido, Japan.
Address correspondence and reprint requests to Hideki Sudo, MD, Department of Advanced Medicine for Spine and Spinal Cord Disorders, Faculty of Medicine and Graduate of Medicine, Hokkaido University, N15W7, Sapporo, Hokkaido 060-8638, Japan; E-mail: [email protected]
Received 10 November, 2017
Revised 19 January, 2018
Accepted 22 February, 2018
The device(s)/drug(s) is/are FDA-approved or approved by corresponding national agency for this indication.
No funds were received in support of this work.
No relevant financial activities outside the submitted work.
