Tateishi, Ayako http://orcid.org/0000-0002-0683-1513
Ohira, Satoshi
Yamamoto, Yoichiro
Kanno, Hiroyuki
Article History
Received: 4 October 2017
Revised: 10 January 2018
Accepted: 31 January 2018
First Online: 9 February 2018
Compliance with ethical standards
: This study was approved by the medical ethics committee at the Shinshu University School of Medicine (Project #3265 was approved on November 2, 2015).
: The authors declare that they have no conflict of interest.