Motomura, Kyoko http://orcid.org/0000-0002-2879-4864
Yamashita, Hiroyuki http://orcid.org/0000-0002-0022-1941
Yamada, Saeko http://orcid.org/0000-0001-8561-4463
Takahashi, Yuko http://orcid.org/0000-0002-6419-3302
Kaneko, Hiroshi http://orcid.org/0000-0002-2998-3544
Article History
Received: 6 July 2019
Accepted: 19 August 2019
First Online: 23 August 2019
Compliance with ethical standards
:
: None of the authors, including Kyoko Motomura, Hiroyuki Yamashita, Saeko Yamada, Yuko Takahashi and Hiroshi Kaneko have any conflicts of interest associated with this article.
: This study complied with the principles of the Declaration of Helsinki and was approved by the Ethics Committee at the National Center for Global Health and Medicine (2018-5-11/NCGM-G-002515-00).