Text and Data Mining valid from 2018-09-05
Received: 17 January 2018
Accepted: 26 August 2018
First Online: 5 September 2018
Compliance with ethical standards
: MI received grant support and lecture fees from Daiichi Sankyo Co., Limited. YI, KM, EM, and MI received lecture fees from Daiichi Sankyo Co., Limited. DM, MO, NH, YN, and SY have no conflicts of interest to report.
: All participants provided written informed consent. The study protocol was approved by the institutional ethics committee of Osaka City University Graduate School of Medicine. This study was conducted in accordance with the principles of the Declaration of Helsinki.