Shimizu, Daisuke
Ichikawa, Shun
Hoshina, Takayuki
Kawase, Mayumi
Tanaka, Kentaro
Araki, Shunsuke
Kinjo, Tadamune
Kusuhara, Koichi
Article History
Received: 30 June 2019
Accepted: 26 August 2019
First Online: 3 September 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: Our prospective observational study was approved by the Institutional Review Board of University of Occupational and Environmental Health, Japan.
: Informed consent was obtained from all individual participants included in the study.