Kumagai, K.
Harigane, K.
Kusayama, Y.
Tezuka, T.
Choe, H.
Inaba, Y.
Saito, T.
Article History
Received: 20 February 2018
Accepted: 19 March 2018
First Online: 24 March 2018
Compliance with ethical standards
: The study protocol and publication were approved by the Institutional Review Board at Yokohama City University (no. B120510026). This study was conducted in accordance with the Declaration of Helsinki and written informed consent was obtained from all subjects.
: None.