Matsuda, Masazumi
Otaka, Aoi
Tozawa, Tomoki
Asano, Tomoyuki
Ishiyama, Koichi
Hashimoto, Manabu
Article History
Received: 30 December 2017
Accepted: 27 March 2018
First Online: 2 April 2018
Compliance with ethical standards
:
: The authors have no conflicts of interest to declare.
: This study was approved by the clinical ethics committee of Akita University.