Lu, Yongping
Ondo, Yumiko
Shimojima, Keiko
Osaka, Hitoshi http://orcid.org/0000-0002-1320-1165
Yamamoto, Toshiyuki http://orcid.org/0000-0002-9484-3505
Article History
Received: 31 May 2017
Revised: 26 June 2017
Accepted: 26 June 2017
First Online: 3 August 2017
Competing interests
: The authors declare no conflict of interest.