Text and Data Mining valid from 2019-01-28
Received: 7 November 2018
Accepted: 13 January 2019
First Online: 28 January 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. Approval was obtained from the local ethics committee of the LIDRE Medical Center (Yokosuka, Kanagawa Prefecture). In the LIDRE Medical Center, there are five hospitals, one pharmacy, and one civic stage, including three external legal experts, following the ethical guidelines of the Ministry of Health, Labor, and Welfare, Japan.
: Informed consent was obtained from all individual participants included in the study.