Yamazaki, Daisuke
Hitomi, Hirofumi
Nishiyama, Akira
Article History
Received: 23 July 2017
Revised: 2 September 2017
Accepted: 6 September 2017
First Online: 22 January 2018
Compliance with ethical standards
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: AN has received honoraria from Boehringer Ingelheim, Daiichi Sankyo, Mochida and Taisho-Toyama, as well as research grant from Boehringer Ingelheim, Daiichi Sankyo, Mochida and Taisho-Toyama. The remaining authors declare that they have no conflict of interest.