Tanaka, Yusuke
Hirose, Yoshitaka
Yamamoto, Yoshihiro
Yoshikai, Yasunobu
Murosaki, Shinji
Article History
Received: 14 June 2019
Accepted: 4 October 2019
First Online: 16 October 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: Approval of the study protocol was provided by the Institutional Review Board of Chiyoda Paramedical Care Clinic (Tokyo, Japan), and this study was conducted in accordance with the 1975 Declaration of Helsinki (2013 revision) and the ethical guidelines for epidemiological research proposed by the Japanese Ministry of Education, Culture, Sports, Science and Technology and the Ministry of Health, Labour and Welfare. All study procedures were fully explained to the subjects, and written informed consent was obtained from each participant before commencing the study. Detailed information that might disclose the identity of the subjects was omitted.