∗Department of Orthopedic Surgery, Keio University School of Medicine, Tokyo, Japan
†Department of Orthopedic Surgery, National Hospital Organization Murayama Medical Center, Tokyo, Japan
‡Keio Spine Research Group, Tokyo, Japan
§Department of Environmental and Occupational Health, School of Medicine, Toho University, Tokyo, Japan
¶Department of Orthopedic Surgery, Kyorin University School of Medicine, Tokyo, Japan
||Department of Orthopedic Surgery, Fujita Health University, Aichi, Japan.
Address correspondence and reprint requests to Kota Watanabe, MD, PhD, 35 Shinanomachi, Shinjyuku, Tokyo, Japan; E-mail: [email protected]
Received 24 January, 2019
Accepted 12 March, 2019
The manuscript submitted does not contain information about medical device(s)/drug(s).
No funds were received in support of this work.
Relevant financial activities outside the submitted work: grants.
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