Hoshikawa, Hidetoshi
Sawazaki, Kenta
Article History
Received: 20 October 2018
Accepted: 20 November 2018
First Online: 23 November 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The study protocol was approved by the Ethics Committee of Tokoha University (2017-012H) and has been performed in accordance with the 1964 Declaration of Helsinki and its later amendments.