Higashi, Takayuki
Eguchi, Hideto
Wakayama, Yusuke
Sumi, Masakatsu
Saito, Tomoyuki
Inaba, Yutaka
Article History
Received: 4 January 2019
Revised: 17 April 2019
Accepted: 24 April 2019
First Online: 10 May 2019
Compliance with ethical standards
:
: This study was approved by the ethics research board of the Yokohama City University School of Medicine. The reference number is B17080001. We certify that all applicable institutional and governmental regulations concerning the ethical use of human volunteers were followed during the course of this research.
: The authors declare that they have no conflict of interest.