Kawamura, Atsuko
Kajiya, Katsuko
Kishi, Hiroko
Inagaki, Junko
Mitarai, Makoto
Oda, Hiroshi
Umemoto, Seiji
Kobayashi, Sei
Article History
Received: 19 November 2015
Revised: 12 April 2016
Accepted: 24 April 2016
First Online: 14 July 2016
Competing interests
: Dr. Umemoto is supported by a research grant from Yamaguchi Prefecture, Japan, and Kyowa Hakko Kirin, Co., Ltd., and also received consultant fee from Maruha Nichiro Holdings, Inc. The other authors declare no conflict of interest.