Kenshi SANO M.D.1, Atsushi KUGE M.D.1,2, Ph.D., Rei KONDO M.D., Ph.D.1, Tetsu YAMAKI M.D.1, Hiroshi HOMMA M.D.1, Shinjiro SAITO M.D., Ph.D.1, Yukihiko SONODA M.D., Ph.D.3
1 Department of Neurosurgery, Yamagata city hospital Saiseikan, Yamagata, Japan
2 Department of Emergency Medicine, Yamagata city hospital Saiseikan, Yamagata, Japan
3 Department of Neurosurgery, Yamagata University, school of medicine, Yamagata, Japan
Corresponding Author’s information: Atsushi KUGE
e-mail: atsukuge@gmail.com
Yamagata City Hospital Saiseikan, nanokamachi 1-3-26, Yamagata, Japan, 990-8533
Phone: +81-23-625-5555.
Name of Department and Institution where work was done.: Yamagata City Hospital Saiseikan
Conflict of interest: None declared