Shimamoto, Kazuaki
Kimoto, Masafumi
Matsuda, Yoshimi
Asano, Kozue
Kajikawa, Mariko
Article History
Received: 6 November 2014
Revised: 9 February 2015
Accepted: 12 March 2015
First Online: 16 April 2015
Competing interests
: KS reports no conflicts of interest with Bayer Yakuhin. MK, YM, KA and MK report employment by Bayer Yakuhin.