Takahashi, S
Katada, J
Daida, H
Kitamura, F
Yokoyama, K
Article History
Received: 21 August 2015
Revised: 31 October 2015
Accepted: 5 November 2015
First Online: 17 December 2015
Competing interests
: ST and JK are employees of Pfizer Japan Inc. HD has received lecture fees from Takeda Pharmaceutical Co., Philips Respironics GK, Nippon Boehringer Ingelheim Co., Astellas Pharma Inc., Sanofi-Aventis, MSD, Bristol-Myers Squibb Company, Astra-Zeneca, Otsuka Pharmaceutical Co., Pfizer Japan Inc., Daiichi-Sankyo Company, Bayer Yakuhin, Ltd, Sanwakagaku Kenkyusho, Eisai Co., Ltd, and research funds from MDS, Astra-Zeneca, Astellas Pharma Inc., Bayer Yakuhin, Ltd, Nippon Boehringer Ingelheim Co., Daiichi-Sankyo Company, Kowa Pharmaceutical Company. FK and KY declare no potential conflict of interest.